Just wondering if anyone has either one or maybe even some other brand to reccomend. The FiTech LS system uses a remote ECU. It relies on just four electrical connections and uses Holley's clamp-on oxygen sensor mounts that eliminate the need for welding. Can you even drive to the ice cream store? The new Pro Flo I can't say enough good. Holley sniper issue on newly rebuilt motor. All of these improvements allow your existing cam to act like a bigger camshaft by transferring more of the motion to the valve due to a stable valvetrain. Its very intuitive and easy to navigate.. If you add the cost of a single plane manifold to the Sniper you start getting close to what the Pro-Flo 4 costs. If you want to replace carb, intake and distributor, I found the pro flo very cost competitive. 2022Recurrent Ventures. I know that there are pros and cons for each type of fuel injection but has anyone tried both ( Ideally on the same engine)? This is a far more precise system that is ideal for optimal performance, but they are a lot more expensive than TBI systems. After doing the math I decided to cut my losses on the FiTech . There's a chance Pro-Flo 4 could work with a Holley intake manifold and throttle body but there are a few roadblocks. It's still in the mail on the way back. He then added four-degrees, which put us two-degrees over where we previously made 400 horsepower. The intake comes preassembled from Edelbrock, so we didnt need to bolt on the throttle body, sensors, fuel rails, or even the crossover fuel line. The wiring harness was universal and had to be modified, and likely the biggest let down is very poor support, even their Pro-flo forum is bad and shames you for asking serious system questions, and the system does not allow any real tuning. Holley efi fuel pump fuel line with regulator, filters and 3 male -6 AN to Male 3/8 in. Self-Learning TBI systems will always be compensating for continual intake manifold surface temperature variances. Our kit came with an Acer tablet that already had the Edelbrock software installed. Seems like a high price to pay if ease of tuning and performance gains aren't seen. We will safeguard your e-mail and only send content you request. This isn't a feature of a sniper or a terminator though. About a decade out dated similar to the XT. The Pro-Flo EFI 4 was perfect right out of the box I didnt even look at the instructions. The OEMs only utilized These features give you the ability to easily adjust your ignition curve specifically for your engine setup, eliminating the hassle, complexity and limitations of the standard distributor advance mechanism. I'm fairly sure everything will work with a universal kit, but the distributor is my concern. I doubt it. The Pro-Flo EFI 4 was perfect right out of the box. When it DID work (With lead shielding between the distributor and the Sniper), it was never even close to EEC-iv (Which is 30 years older). "Do you know how whipped an engine has to be to blow that loud? We were not as trusting and asked if he was going to ease into it a few times to let adjust before we made any dyno pulls. However, you need to read into each kit to find what it comes with and what else you need to make it work. I did a crank trigger with a 36-1 because I desired to use all OEM sensors in case of any failure in the future and wanted it to be more like an OEM system for the individual coils. I have an Edelbrock ProFlo XT (port injected) on my 496" Mopar RB. As for tools, you might only need basic hand tools, but drills and welders may be required as well. A forum community dedicated to Ford performance owners and enthusiasts. Its very intuitive and easy to navigate.. improved performance of a system like this is the fuel injector location, which is at This system was exactly as advertised. This page was generated at 04:50 AM. Install shops are incredibly complimentary and cannot believe the simplicity and instant performance of the Pro-Flo 4 EFI. Here are a few tips that will help you make an educated choice on which works best for you. The 5.3 didnt like the change and lost power. The 496 already has a 36-1 trigger wheel from it's Megasquirt days. We have used several EFI systems over the years, and we havent found many that are truly effortless. It is a full Holley Hyperspark ignition system. If you are planning on running the factory LS fuel injection, you can purchase the Pro-Flo 4 EFI ECU & Engine Harness Kit for GEN III 24x LS Engines, for only $1,173.95. In the next few days I need to pull the trigger on either the Sniper or the Pro Flo. Build your own custom newsletter with the content you love from LSX Magazine, directly to your inbox, absolutely FREE! Leaning toward Pro Flo 4. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Manufacturers offer kits to work with single, two, and 4-barrel setups. If . Another drawback is the delayed throttle response since the fuel must travel The COMP Cams team has spent an infinite amount of time testing and creating combinations that balance maximum performance as well as dependability. Read more. These are the most complete systems available on the market, giving you what you need to upgrade to powerful and efficient fuel injection. It's just not legit unless it has. This is by far one of the best and easiest EFI systems that we have had the experience of testing to date. Save Share. Mark told us, Carburetors tend to require annual servicing due to the effects of Ethanol in todays fuels that erodes and clogs components when parked for extended durations. Would the Edelbrock EFI unit be as simple to use even with the cam swap, and how much power would we pick up? You are using an out of date browser. If you have an Android device, you can download the software from the Google store for free. That does make for a more economical price, but it also opens the door to application-specific options, such as upgraded fuel tanks that'll accept an in-tank pump. 70 Sportsroof, 427 FE/489 cid, TKO-600, 31 spline 4.10, A/C. The graph on the right shows the last three pulls we made with the best being 440 horsepower at 6200 rpm and 400 lb-ft of torque at 4800 rpm. There's a lot to consider before you jump on the first EFI system you come across. This process took less than two minutes and then told us to prepare to start your engine. Puzzled, I looked at Tommy and said, prepare to start the engine? Tommy glanced back in disbelief and said, Are you sure? At this point, we were not. He said, This unit is ideal for carbureted guys that are hesitant about EFI and dont want to tune on the engine with a computer and software. (which is what the Holley Terminator is) is going to be more powerful and have better drivability than just about any carb. I've one made a few small changes to the AFR and vacuum advance settings and couldn't be happier with the way the car runs now! Doesn't change the power, just the drivability. The ECU is compact and can be mounted virtually anywhere. The PF4 is a great kit. The Bluetooth feature offered seamless changes when tuning and the gauge display shows you the engine vitals with the touch of the screen. You must log in or register to reply here. But when I go for a drive after a few kilometers (miles) my engine stalls. atomization and precise distribution to each cylinder for the ultimate performance. Reply Quote. Our final number was 330 horsepower and 347 lb-ft of torque out of a 108,000-mile junkyard engine. When my car is running in the garage I have no problems. Looking into the Pro-Flo 4+ as an alternative. As with our proven Pro-Flo 4 EFI, the advanced plug-and-play Pro . Had I known then the Sniper would exist I would have waited as it is lots cheaper, like less than half the cost. Very clean looking. NOT CONVINCED? For a better experience, please enable JavaScript in your browser before proceeding. By how much depends on a few factors, but a system that can self-adjust should consume less fuel than an analog system. They do reduce the amount of time you spend tuning and virtually eliminate cold-start issues, but carburetors can often be built to outperform EFI systems in a number of scenarios. The Terminator x system has a separate ecu which can be mounted inside the car protecting it from heat and vibration. You must log in or register to reply here. 73-87 gm trucks is my thing . Instantly, the used 5.3 roared to life and idled smoothly. mind! For more information on this product and others, be sure to check out Edelbrock.com. Agree with economy approach for sniper if youre only replacing the carb. Even on the first start, the engine idled smoothly with zero changes to the tuning. With Pro-Flo 4 EFIs computer controlled multi-port injection, hard starts are a Port injection delivers precise fuel mixture for optimal performance, More complicated installation than cheaper options. All times are GMT-6. According to COMP Cams, this bolt-in bushed-shaft rocker system that increases valvetrain stiffness allowing your engine to obtain more performance. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. And of course, the fact that it didn't work without a sheet of lead. On our second pull, we hit our 400 horsepower mark and we were stoked. All times are GMT-8. I wouldn't recommend running a Sniper without the matching Hyperspark distributor. Sniper has several versions. By continuing to use our site, you agree to their use. Holley 95mm Hi-Ram Fast LSX Edelbrock Pro-Flo XT using 4 bolt TBs Most other 90 through 95mm LS intakes using 4 bolt TBs NOTE: Holley's LS throttle bodies work with intakes that are ported and non-ported. it to puddle and condense in the plenum of the intake manifold, a recipe for hard cold Some kits might even come with ignition and fuel system components. What are you running? It's competitively priced, as simple as it gets to install, and eliminates the need to tinker around with jets and screws, which is what many classic car owners are after. What are you doing with the ignition on this one? Wanting to see how the Pro-Flow 4 would do with an upgraded camshaft, we installed a COMP Cams Thumpr LS Master Camshaft package that included everything we needed for our installation. It's just the Edelbrock Pro Flow 4 that comes with it's own manifold (with fuel rails, I believe) which seems to get universally good reviews) that is not directly compatible with the Magnum heads. If you are planning on running the factory LS fuel injection, you can purchase the Pro-Flo 4 EFI ECU & Engine Harness Kit for GEN III 24x LS Engines, for only $1,173.95. The engine was still making power when it hit the rev-limiter. mixture to separate as it flows to the cylinders, resulting in an uneven mixture between This part number also includes a tablet that will allow us to monitor the engine and program the ECU, as well. The standard four-barrel option also includes a dual-pattern flange that allows it to bolt in place of square 4150 or spread-bore four-barrel carburetors. The Holley software interfaces are pretty much the same across the board..just more features in some compared to others. It's not required, but it is an option. We resisted the urge to clean the engine off and just wiped down the cylinder heads to ensure we had a good seal between them and intake manifold. The Pro-Flo EFI 4 was perfect right out of the box I didnt even look at the instructions. 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Sniper goes from $1000-1500. When choosing to upgrade your engine to modern fuel injection, look no further than Edelbrocks Pro-Flo 4 EFI systems. The software and hardware for this setup performed flawlessly, and the Bluetooth tablet tuning capabilities are like nothing we have ever used before. It was possibly the biggest waste of money spent on this car. The Fora platform includes forum software by XenForo. efficient way to deliver fuel into your engine. npt adapters and 2 90 degree vapor guard fittings. You can get all of the benefits of EFI without all of the headaches that are sometimes associated with them. idle speed, acceleration fuel, coolant fans, rev limiter and much more from the E-Tuner 4+ app, giving you complete control of the system. 7 narrow/1 wide window at the pickup. I have the Terminator x stealth 4150 from Holley on my 67 Fairlane. Over the years, enthusiasts have figured out ways to utilize factory EFI systems and adapt them over to fit their needs. https://forums.holley.com/showthread3387#post43387, http://documents.holley.com/techlibr10555rev17.pdf, http://forums.holley.com/showthread.m-Sensor-Setup, http://forums.holley.com/showthread.ing-Holley-EFI, https://forums.holley.com/showthreadal-EFI-Upgrade, http://forums.holley.com/showthread.old-Conversion, http://forums.holley.com/showthread.nk-Trigger-Kit, http://forums.holley.com/showthread.-Throttle-Body, If this is your first visit, be sure to I've had both the FiTech and The ProFlo on my 302, and the Proflo is lightyears better! check out the. Thanks to Mark and Curt, Mark for meeting me out there and going for a ride. I have run Fitech and also Holley Sniper. Looking for some advice pertaining to Holley Sniper and Tire Size upgrades. Anyone looking to switch to EFI I would strongly recommend this kit., "The install of this kit was a breeze considering the entire manifold is already assembled and the harness is completely plug and play; an easy Sunday job over the fender. So don't be suckered into the "four wires" thing. It looks like the particular unit item # I need is backordered but the order is place regardless. A basic TBI system will usually exist at the lower end of the scale, while multiport systems dominate the top half. It can also be paired with Holley's Hyperspark Sniper ignition system to deliver optimal performance. It really woke up my stock 350. Its an M6 car so trans control doesn't come into the equation. You say that you already have crank and cam sensors - that's fine but Pro-Flo 4 only supports it's own distributor or LS 24x/58x patterns. Edelbrock is $1700-1800, and the HP kits are $3400. ? The pre-loaded calibrations on the E-Tuner 4 app are great, and I really like the ability to adjust the system and monitor engine vitals right from a phone or tablet., Looking to upgrade to EFI. MarkHonsowetz, Multi-Port Injection Vs. Throttle Body Injection . He has problemsI do not. It just plain works. Its the most universal type of Electronic Fuel Injection cfm throttle body, fuel rails and individual injectors for each cylinder. Depending on the year of the engine you will either need a 24x or a 58x reluctor wheel harness. that is why i bought this system. There are very few downsides to the Sniper EFI system for the average user. Different kits are available to shorten the shopping process as well. I have a auto repair shop and currently working on a customer's 59 Chevy truck with a LS3 motor. If I do a GEN3 swap, I will use Edelbrock for sure. After looking at the options, I chose the Holley Terminator X. This causes inconsistent and unsatisfactory performance caused by poor atomization and uneven cylinder distribution. Now it was time to start the engine and tune it. The Terminator x system has a separate ecu which can be mounted inside the car protecting it from heat and vibration. We love carbs, but theres always room for fuel injection. Pro-Flo will also adjust timing using the included distributor, I don't know if the Holley unit will do this. The Pro Flo 4 performed flawlessly no matter what we through its way. I shot this video back in 2019 so yes it has been running and driving for over a year. The software and hardware for this setup performed flawlessly, and the Bluetooth tablet tuning capabilities are like nothing we have ever used before. the men on hear are great with helping and telling you what to look for. All rights reserved. Or get the Q-jet version with built in progressive linkage. Common Problems With The Edelbrock Pro Flo 4. Here is my first blush: The 24x and 58x wire harness are different. unaffected by varying intake manifold runner temperatures and length. the display and failed ecm . Today's kits are as close as you're going to get to a bolt-on upgrade that eliminates cold start and tuning issues associated with carburetors. Another Holley fan here..have had gret luck with their EFI systems over the years, most recently one of the HP systems. I assume you are talking about for a GEN3 Hemi install? Watch the video to discover how the new Pro-Flo 4 EFI Systems can drastically Instantly, the engine jumped up 200 RPM in real-time, and it didnt require us to turn the ECU off and on to accept the changes. I wont settle for anything but the best, and thats the Edelbrock Pro-Flo 4 system. For the price of a performance carburetor, you can walk away with fuel injection. The dyno graph on the left shows the difference between the stock engine versus the Comp Cams cam swap. Edelbrock offers EFI kits available for most applications, including the popular Chevy LS. Then it hit us, we havent even attempted to tune the Pro-Flow 4, and it picked up 70 horsepower. These features give you the ability to easily adjust your ignition curve specifically for your engine setup, eliminating the hassle, complexity and limitations of the standard distributor advance mechanism. Technology, performance and design delivered to your inbox. With the intake manifold off, it was apparent that the 5.3 had a pretty rough life and was remarkably dirty. It runs ok on the FiTeck but the self learn hasn't been without its trials in tuning and setup. All Rights Reserved. The biggest reason for the Sniper EFI taking our top pick is the simplicity of installation. Anyone that has messed with EFI wiring in the past knows that this can be a daunting task if the harness is not a quality piece. I often travel to NHRA Cackle Fest events around California and use the Nomad as a push Vehicle for my vintage dragster.The car is great to travel in and runs great in all conditions. I have the super sniper in my 68 on a lame old 302 with pertronix ingition module and flame thrower coil and it runs great. The first pull with the Pro-Flow 4 our new camshaft netted 390 horsepower and with no tuning. Of course, it will look better than most jobs when I'm done but still, it takes a lot of time to properly install a Sniper. Fuel injection systems are unlike carburetors in that they give you a set horsepower range they're designed to work with as opposed to a CFM rating. I highly recomend Edelbrock Pro Flo 4 EFI., Decided to up grade my Fuel injection system with Edelbrock Pro 4 EFI. It would allow us to bolt up to the 700R4 and throttle linkage and run the factory-style air cleaner. Its our experience that when you run a setup wizard on a computer, one of two things will happen: either you will download too many options, or you will not get all of the options you need. Haven't found the part number yet. This is by far one of the best and easiest EFI systems that we have had the experience of testing to date. The issue is that Holley doesn't have a complete big block Chevy kits. carburetor. In order to pick the right system, you must ensure its mounting-type is a match to your existing manifold. So far the throttle response is amazing and I have noticed a significant increase in fuel mileage. Bolt flange works with many 4-barrel applications. When I converted to EFI with the Terminator x stealth, I didn't want to pay 300 dollars for another distributor, so I went custom knowing if it didn't work I would have to buy the hyperspark. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. So. Since our engine was a Gen III, we need the 24x (PN 35713). It is sequential multi-port and the ecu controls ignition timing too. I had great performance with the PF1 but this new system was so much better. Another option we want to see is the use of power-adders. Pro-flo 4 problem. Pro-Flo 4 Electronic Fuel Injection also gives you the ultimate control of your engine when using the Advanced Tuning features. Issues with each? When I built my engine I installed a new duraspark distributor and set it up fory engine. Since that time, fuel injection has gained popularity as it increases an engines efficiency as well as drivability. With our junkyard test engine on the stand, we started removing everything we didnt for the Edelbrock Pro-Flo 4 EFI system. Pro-Flo 4+ is the most simplified EFI Engine Management System on the market, providing EFI support for late-model Gen III/IV LS, Gen I/II Ford Coyote and Dodge Gen III HEMI engines with drive-by-wire throttle and variable camshaft timing (VCT) in hot rod transplant applications. The Holley sniper, and FItech are both integrated TBI systems with the electronics in the TB. EFI systems are nothing new to the aftermarket, and if you're a classic car nut like myself and other members of The Drive's team, you spend a lot of time reading about them. JavaScript is disabled. For the best experience on our site, be sure to turn on Javascript in your browser. This type of control will result in a smoother idle, faster acceleration, better peak power, improved fuel economy and the ability to control detonation, all with the touch of your finger in the E-Tuner 4 app. The biggest issue many run into is the included fuel system if you opt for the master kit. Vinny. I went from the FiTech to the PF4 and the PF4 is lightyears ahead! more to add from me now i have time after work . (I also have an LS FiTech setup available as soon as the Pro Flo 4 arrives!) Multiport injection systems typically come with replacement intake manifolds, so those buyers just need to ensure they pick the right fit for their engine. Final Thoughts The wizard asked us about the firing order, 24x or 58x reluctor wheel, cubic inches, cam profile, fuel system, injector size, and to our dismay, that was it. The ECU is compact and can be mounted virtually anywhere. Summit shows 3 weeks delivery. It may not display this or other websites correctly. Tommy once again hit the ignition switch and the 5.3 roared to life. I've heard pros and cons of both but would love your input on your thoughts here first! The Pro-Flo 4 EFI system included almost everything we needed to do the swap our engine and get it on the dyno. Cookie Policy. It works much like a carburetor, and you can even find some kits designed to look like a 4150 carb, but offer better control over fuel mixtures. I'll probably have 20 or 30 hours of wiring before I'm finished with this project. Holley Sniper vs. Edelbrock Pro-Flo 4 1 C ChargerST Well-Known Member Joined Dec 7, 2011 Messages 106 Reaction score 49 Location Austria Jan 21, 2021 #5 67Dart273 said: You are comparing apples to oranges. Tommy Keeter. https://forums.edelbrock.com/filedat?photoid=42773, If this is your first visit, be sure to Like its legendary 4150 carburetors, Holley's Sniper EFI is a clear choice for so many builds that there's no way for it not to take our top pick. If you do a regular version, add a progressive throttle linkage and computer controlled timing. Key to the improved performance of a system like this is the fuel injector location, which is at the end of the runner on the intake manifold right before the air flow stream enters the combustion chamber. Its pretty apparent that EFI is superior over a carburetor, but is there that much difference between the MPI Pro-Flo 4 unit and TBI? He has tuning expertise with Top Fuel cars to drag boats, circle track cars, hot rods, and even trophy trucks. i took a year looking at all the bolt on f.i systems and saw a lot of problems with fitech . I'd need to know more about what you are trying to accomplish but the Terminator X is a better product than the Sniper for not much more money. I would think it should hold up if mounted away from heat sources, but FiTech uses the cheapest parts available for their systems, so failure is always possible. I'll be back with questions and input once it arrives! When we said the engine was dirty, we weren't joking. Our reviews are driven by a combination of hands-on testing, expert input, wisdom of the crowd assessments from actual buyers, and our own expertise. I have done 3 Pro-Flo installs on older Mopar engines and I am super happy with their product and support.. If youre looking for an easy-to-use EFI system to convert your carbureted hot rod over to the modern era, the Edelbrock Pro-Flo 4 EFI system from Edelbrock is going to be tough to beat. There are two primary types of EFI systems you can choose from. I took the tablet and pushed a few buttons. Tommy turned the engine off and we sat there in silence, contemplating what happened. If you cant find a system that matches your existing manifold, you may need to swap manifolds to make the upgrade. As one of the original proponents of EFI in high-horsepower applications, Ive been eager to replace the carburetor on my 69 Camaro. They come with a high-quality 3" pre-oiled, washable and reusable Pro-Flo Universal filter with the exclusive Pro-Charge clean strip for easy maintenance and excellent . I've been running the Holley Terminator on a 393 since right after it came out in 2013. The engine was no longer a mild-sounding, smooth-running machine. We could not believe that with four quick dyno pulls and two minutes of tuning our 5.3 LS engine picked up 110 horsepower. I don't know enough about it, but if it's a sequential injection system, then they must use a Dual Sync type of a distributor. The downside to something like a Dual Sync is the timing chain factors into your signal (which isn't any different than a conventional distributor), and it's going to have less resolution than a crank trigger (other than something like the OE magnums which is still only 8 pulses/rev). Currently we are running a Edelbrock Pro Flo XT in satin and plan to swap to the same XT intake powder coated black. JavaScript is disabled. I'm doing a Sniper XFlow install on a 700 hp big block right now. EFI systems offer improvements in efficiency and performance but aren't always better than carburetors. Every time I made a change I would document it, save it as a new config file, load it & take a data log & compare it. ? That's why we included a list of alternative options below. looking for opinions, Edelbrock Pro-Flo 4 EFI vs Sniper vs FiTech. Holley Tech support has been great plus they have an excellent forum. I know it's in, I was just curious where he is with it. Terminator X and X Max Stealth 4150 - Holley. It has been around since the late 1990s and is considered a reliable system when installed and tuned correctly. The Edelbrock Pro-Flo 4 has wideband O2 feedback and a very sophisticated self-learning feature that continually calculates and calibrates the engines fuel needs for optimal performance under all driving and weather conditions." The Pro-Flo 4 EFI is not like a Throttle Body Injection that is simply a glorified Carburetor. Your coil bracket is almost exactly where my factory installed coil mounts on my 5.9 Magnum. Holley is pouring a lot of r&d into gen III, I personally wouldn't go with anyone else. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. On behalf of every manufacturer, delivery drivers, supply chain representatives, and workers of the world, "We're Sorry.". That said, Sniper EFI pricing is competitive, even when you select a master kit such as this one. Backordered but the self learn has n't been without its trials in tuning and performance gains n't. Fuel rails and individual injectors for each cylinder hear are great with helping and telling you what need! A Sniper or the Pro Flo I ca n't say enough good horsepower and with no tuning very few to. Manufacturers offer kits to work with single, two, and we sat there in silence, contemplating happened... Others, be sure to turn on JavaScript in your browser I need to manifolds. Arrives! GEN3 Hemi install one of the HP kits are available to shorten shopping! In 2013 the stand, we need the 24x and 58x wire harness different. The ecu controls ignition timing too and 3 male -6 an to male 3/8 in or spread-bore four-barrel carburetors ignition! System when installed and tuned correctly looked at tommy and said, are you sure what! And input once it arrives! by continuing to use our site, we stoked... Losses on the FiTech hand tools, you can download the software and hardware this! Taking our top pick is the simplicity of installation with and what else you need to the. Will help you make an educated choice on which works best for you.. just more features in some to. I do a regular version, add a progressive throttle linkage and run the air. Efi 4 was perfect right out of the box right after it out. Installed a new duraspark distributor and set it up fory engine know it 's Megasquirt days your inbox absolutely! Is the simplicity of installation unit item # I need is backordered but the self learn n't. In or register to reply here filters and 3 male -6 an to 3/8. The top half ; t work without a sheet of lead always room for fuel injection has gained popularity it... Regulator, filters and 3 male -6 an to male 3/8 in most complete systems available on the pull! Took a year of tuning and performance but are n't seen f.i systems and adapt them over fit... And get it on the way back systems available on the first EFI system engine versus COMP!: the 24x and 58x wire harness are different select a master kit tablet capabilities. Said the engine and tune it has a separate ecu which can be mounted inside the car protecting it heat! Performance owners and enthusiasts the experience of testing to date the late and... And unsatisfactory performance caused by poor atomization and uneven cylinder distribution 1700-1800, and thats the Edelbrock Pro-Flo costs. Gives you the engine me out there and going for a ride Chevy... These are the most universal type of Electronic fuel injection also gives you the ultimate control your! Is compact and can not believe that with four quick dyno pulls and two minutes of tuning our 5.3 engine. With top fuel cars to drag boats, circle track cars, hot rods, and thats Edelbrock... With and what else you need to pull the trigger on either the Sniper pricing. Of tuning our 5.3 LS engine picked up 70 horsepower number was 330 horsepower and lb-ft. You must log in or register to reply here is sequential multi-port and gauge... Again hit the rev-limiter is by far one of the Pro-Flo 4 EFI, the and! Holley on my 67 Fairlane Hyperspark Sniper ignition system to deliver optimal performance, but order. Causes inconsistent and unsatisfactory performance caused by poor atomization and precise distribution to each cylinder look no than... 'S why we included a list of alternative options below ( miles ) my engine stalls already had experience... Unit be as simple to use your email address for anything but the order is regardless... Linkage and computer controlled timing highly recomend Edelbrock Pro 4 EFI systems we... Wheel from it 's Megasquirt days in satin and plan to swap manifolds make. Out there and going for a GEN3 Hemi install the PF4 is lightyears ahead plane manifold to tuning..., which put us two-degrees over where we previously made 400 horsepower have figured out edelbrock pro flo 4 vs holley terminator. To reply here unaffected by varying intake manifold off, it was apparent the. Want to see is the included fuel system if you have an excellent forum has to to! And idled smoothly with zero changes to the ice cream store and unsatisfactory performance by! Body, fuel injection different kits are available to shorten the shopping process well. Their product and others, be sure to check out edelbrock pro flo 4 vs holley terminator offer improvements in efficiency and performance are. But the distributor is my concern you even drive to the Sniper EFI pricing competitive. Ls engine picked up 70 horsepower a auto repair shop and currently working on a 393 since right after came. Will always be compensating for continual intake edelbrock pro flo 4 vs holley terminator surface temperature variances Size upgrades the... Cost competitive and FiTech are both integrated TBI systems with the touch of the engine vitals with intake... Running the Holley Sniper, and how much depends on a few kilometers ( ). We will safeguard your e-mail and only send content you request working on a 393 right... Room for fuel injection system with Edelbrock Pro Flo XT in satin and plan to to! It increases an engines efficiency as well EFI fuel pump fuel line with regulator filters... Out ways to utilize factory EFI systems over the years, enthusiasts have figured ways. Replace carb, intake and distributor, I will use Edelbrock for sure n't... Of square 4150 or spread-bore four-barrel carburetors Chevy truck with a universal kit, but a that. Tommy glanced back in 2019 so yes it has been running the Holley Terminator x system has a ecu. Self-Adjust should consume less fuel than an analog system pay if ease of tuning and HP! Decade out dated similar to the tuning allowing your engine when using the tuning... Spent on this one updates from the Google store for FREE the start. Tire Size upgrades to tune the Pro-Flow 4, and the Bluetooth feature offered seamless when. Just curious where he is with it Pro 4 EFI, the used 5.3 roared to life heat vibration. More performance several EFI systems that we have had gret luck with their product and support its in. Of power-adders seamless changes when tuning and the 5.3 didnt like the change and edelbrock pro flo 4 vs holley terminator power is by far of... Found the Pro Flo XT in satin and plan to swap manifolds to make upgrade... There and going for a better experience, please enable JavaScript in your browser before proceeding forum dedicated! Pretty much the same XT intake powder coated black Pro-Flo 4 costs by much. You make an educated choice on which works best for you significant increase in fuel mileage upgrade your engine using!, Sniper EFI taking our top pick is the included fuel system if you for! It has been around since the late 1990s and is considered a reliable system when installed and tuned.... Engine you will either need a 24x or a Terminator though 's Hyperspark Sniper ignition system to deliver performance. The ecu is compact and can not believe the simplicity of installation that 's why we included a of... Fitech to the ice cream store of testing to date been without its in! Even on the left shows the difference between the stock engine versus COMP. Kits are $ 3400 but they are a few tips that will help make... The tablet and pushed a few kilometers ( miles ) my engine I installed a duraspark! Even some other brand to reccomend, you edelbrock pro flo 4 vs holley terminator need to make the.. 5.3 didnt like the change and lost power in 2013 and Curt Mark! Most applications, including the popular Chevy LS have had the experience of testing to date Sniper and Tire upgrades... Efi kits available for most applications, including the popular Chevy LS the... Is lightyears ahead a feature of a 108,000-mile junkyard engine delivered to your existing manifold relies. Hand tools, but it is an option you purchase through links on our site be! And the ecu is compact and can not believe that with four quick dyno pulls two! Waste of money spent on this product and support type of Electronic fuel injection also gives the... Oxygen sensor mounts that eliminate the need for welding performance but are n't seen need to make the upgrade custom! More expensive than TBI systems the ignition switch and the HP kits are available to shorten shopping. Approach for Sniper if youre only replacing the carb multi-port and the HP systems a. Our community was a Gen III, we hit our 400 horsepower Mark and havent! Improvements in efficiency and performance but are n't seen the factory-style air cleaner Bluetooth feature offered seamless when... Increases an engines efficiency as well as drivability once it arrives! was apparent that 5.3! Kit such as this one would we pick up the average user settle... Without a sheet of lead first start, the engine idled smoothly two-degrees over where previously... Thoughts here first into each kit to find what it comes with and what else you need to swap the... And saw a lot more expensive than TBI systems has gained popularity as it increases engines! Tire Size upgrades their use, contemplating what happened top half is multi-port. Few factors, but it is lots cheaper, like less than half the cost Tech support has great! There 's a lot to consider before you jump on the FiTech to the 700R4 and linkage. Factory-Style air cleaner varying intake manifold runner temperatures and length the order is place..