after 40 years of working on cars for a living this is the best system and support i have found. This design delivers the fuel into the air flow stream in the plenum Edelbrock combines the CRANK and CAM (two separate wires from the ECU into one connection at the distributor) trigger signals into one. 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 easy to install and all the parts you need come with the kit. The fuel injectors are moved down the intake runners just before each of the cylinders. However, less-inclusive versions are available for those who just need the EFI system itself because they have a different fuel system in mind. Pro-Flo 4 EFI has the potential for improved fuel economy when upgrading from a The Pro Flo 4 performed flawlessly no matter what we through its way. It would allow us to bolt up to the 700R4 and throttle linkage and run the factory-style air cleaner. By utilizing a laptop (or the optional 5.7" full. - Mark Honsowetz Holley's Sniper EFI system is a great option for many, but it's not the best for every situation. The Drive has answers. This design is a simple yet excellent improvement over the factory design. Doesn't change the power, just the drivability. I wont settle for anything but the best, and thats the Edelbrock Pro-Flo 4 system. Has anyone else done this already? similar to a carburetor. This causes inconsistent and unsatisfactory performance caused by poor atomization and uneven cylinder distribution. Agree with economy approach for sniper if youre only replacing the carb. We then dropped the Pro-Flo 4 intake on the 5.3 and bolted it down with zero problems. I removed the carburetor manifold and the injection manifold bolted right on with no modifications. 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 a few of them . Tommy Keeter, owner of KPE Racing ran the dyno and monitored all of the vitals. It was affordable and runs well, but pretty cheaply made compared to others I have installed. It's still in the mail on the way back. Had I known then the Sniper would exist I would have waited as it is lots cheaper, like less than half the cost. Port injection delivers precise fuel mixture for optimal performance, More complicated installation than cheaper options. I have done 3 Pro-Flo installs on older Mopar engines and I am super happy with their product and support.. I went from the FiTech to the PF4 and the PF4 is lightyears ahead! Some kits might even come with ignition and fuel system components. This application-specific kit is the best way to bring a classic to modern standard. This is a far more precise system that is ideal for optimal performance, but they are a lot more expensive than TBI systems. Granted, we havent tried all of the EFI units on the market, but we have played with our fair share. TBI systems, while semi-universal, require a little bit of homework before purchasing. For the best experience on our site, be sure to turn on Javascript in your browser. UNDER CONSTRUCTION repaint to Ford Kona Blue, black 18in AR VN 510 / Holley Terminator / 3.4L Whipple Fordstrokers 427 / 8.8 rear with 373 gears / Wilwood disc brakes./ Vintage Air a/c & serpentine / FPA Headers with X pipe & Dynomax Ultraflows / cut outs / BCA Transmission 4R70w. ".Bug from the movie Uncle Buck. FiTech is TBI, PF4 is TRUE fuel injection. Lots of folks do and it's supposed to be mostly plug and go. I'll say it has been a great system for a street only car, but is WOEFULLY lacking for the strip. Mark Honsowetz. combustion chamber. All rights reserved. Holley is pouring a lot of r&d into gen III, I personally wouldn't go with anyone else. This is by far one of the best and easiest EFI systems that we have had the experience of testing to date. The Sniper is the economy way to add EFI, the Proflow is a higher end EFI kit. and it ran awesome out of the box up and down the rocks and hauled through the desert flat sections. With no CAM signal, it wouldn't know which #1 TDC it was at, but it also shouldn't matter since the distributor was handling the spark distribution. I bought Sniper for my car and before I bought the Hyperspark distributor, CDI box and coil, I was. Haven't found the part number yet. It's just not legit unless it has. The setup wizard is extremely simple and self-explanatory. It ultimately comes down to what you're trying to achieve and how much time you're willing to spend tuning your car. Its been a night and day difference in what I feel in driveability and seat of the pants fun. The Holley sniper, and FItech are both integrated TBI systems with the electronics in the TB. Fuel injection systems rarely need such services. 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. Edelbrock has a Pro Flow 4 system for LS with a cast high ram manifold for $2195. Mark states, Most customers are surprised with the simplicity of the E-Tuner 4 app. 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. 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. When we said the engine was dirty, we weren't joking. There's a chance Pro-Flo 4 could work with a Holley intake manifold and throttle body but there are a few roadblocks. When I built my engine I installed a new duraspark distributor and set it up fory engine. Also there are way more instances of guys having emi and RFI interference with sniper due to the ecu being inches from a distributor and coil. Edelbrock Pro-Flo 4 EFI Traditional 4150-Style Kit. 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. We were excited to see how much power the COMP package would make and see how the Pro-Flo 4 would handle the larger camshaft. That said, Sniper EFI pricing is competitive, even when you select a master kit such as this one. I didn't use the hyperspark system. As for tools, you might only need basic hand tools, but drills and welders may be required as well. I have the Holley terminator and love it. It looks cool and it works great but it isn't really needed. You are comparing apples to oranges. The COMP Cams Max-Lift BSR Shaft Rocker Systems (PN 1983-16) was a needed upgrade since our factory rockers were looking pretty rough after years of abuse. I can't say anything on Fitech but I did have an earlier model Eldebrock Pro Flo 2. The Pro-Flo 4 intake will be taller then the Performer intake. Yes approx another grand after I sell my current setup. The Pro-Flo EFI system comes pre-assembled and simply bolts on the LS engine. Included fuel system may not work for some applications. Sniper has several versions. The software and hardware for this setup performed flawlessly, and the Bluetooth tablet tuning capabilities are like nothing we have ever used before. For a better experience, please enable JavaScript in your browser before proceeding. All Rights Reserved. In the next few days I need to pull the trigger on either the Sniper or the Pro Flo. Even on the first start, the engine idled smoothly with zero changes to the tuning. After the engine was set up on the dyno cart, we removed the factory composite intake on the engine. 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 plan on replacing all of those things and I want to avoid new fuel tank with Sump System. With our junkyard test engine on the stand, we started removing everything we didnt for the Edelbrock Pro-Flo 4 EFI system. The engine ran for about five minutes before it got up to 165-degrees. He then added four-degrees, which put us two-degrees over where we previously made 400 horsepower. It relies on just four electrical connections and uses Holley's clamp-on oxygen sensor mounts that eliminate the need for welding. The Fora platform includes forum software by XenForo. With either system though, I think your pump, tank, return needs to be worked out? By continuing to use our site, you agree to their use. 454ci, 500-600hp, street cruiser Out of those three, the Pro-Flow, because it is a multi-port, sequential system. One additional item that you will need to order with the kit is the Ignition/IAC harness. idle speed, acceleration fuel, coolant fans, rev limiter and much more from the E-Tuner 4+ app, giving you complete control of the system. Reply Quote. The Pro-Flo EFI 4 was perfect right out of the box I didnt even look at the instructions. It's not compatible with Holley EFI as-is. Holley Tech support has been great plus they have an excellent forum. Holley Terminator X - Starts at $999. 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. However, you need to read into each kit to find what it comes with and what else you need to make it work. Edelbrock offers EFI kits available for most applications, including the popular Chevy LS. Pro-flo 4 problem. But I wanted a little project and to clean up the engine bay, so I purchased a Sniper (And then Hyperspark distributor, and the distributor gear, and then.. yadda yadda yadda). Dont mind me, just posting a video for an article. 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. Holley says that it is a simple four wire install but that isn't even close to the truth. So, while the master kit is a great option for some, it's essential to consider the specifics of your application and whether that particular fuel system is going to work for you. I made a 36-1 trigger wheel then mounted a Holley sensor on a bracket so it picks up the signal from the trigger wheel. through the intake manifold to the combustion chamber. The Terminator x system has a separate ecu which can be mounted inside the car protecting it from heat and vibration. I've had both the FiTech and The ProFlo on my 302, and the Proflo is lightyears better! I'd suggest it over a sniper in the Holley brand even though it's a few hundred more dollars. 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. Pro-Flo 4 is a Sequential Port Fuel Injection system. Pro-Flo 4 EFI systems feature a high performance Edelbrock intake manifold with a Looking for some advice pertaining to Holley Sniper and Tire Size upgrades. Copyright 2022 Holley Performance Products, Inc. All right reserved. Common Problems With The Edelbrock Pro Flo 4. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. I've heard pros and cons of both but would love your input on your thoughts here first! Since our engine was a Gen III, we need the 24x (PN 35713). Would the Edelbrock EFI unit be as simple to use even with the cam swap, and how much power would we pick up? IIRC it will only cover up to 550hp. 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? I just bought the Sniper 2 barrel version for my other bronco, hope to install soon. 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. Pro Flo 4 has made my 1969 Camaro daily drivable which I would have never thought possible. Over the years, enthusiasts have figured out ways to utilize factory EFI systems and adapt them over to fit their needs. I'm still deciding between it and the holley style regulator since I've used the holley style on a terminator kit I did on a different car but I can't seem to find much info on the Pro-Flo regulators except one youtube video and the recommendation on the Edelbrock . 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. I like it alot. This particular kit includes everything from the EFI system itself to the fuel pump and some plumbing components. 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. Idle, cold and hot starts are no longer an issue. carburetor. The Holley sniper, and FItech are both integrated TBI systems with the electronics in the TB. The COMP Cams team has spent an infinite amount of time testing and creating combinations that balance maximum performance as well as dependability. Edelbrock offers EFI kits available for most applications, including the popular Chevy LS. Now it was time to start the engine and tune it. MarkHonsowetz, Multi-Port Injection Vs. Throttle Body Injection Install shops are incredibly complimentary and cannot believe the simplicity and instant performance of the Pro-Flo 4 EFI. Here is my first blush: The 24x and 58x wire harness are different. These are the most simple and affordable types out there. I have a Pro Flo 4 on my 318/390 stroker and its fine but I'm strongly leaning towards the Holley for my Gen III swap. 08-03-2020, 08:54 AM. To do a conversion a Dual Sync is recommended. When my car is running in the garage I have no problems. The fuel injector Your build and personal preferences might require something else. I watched the video from Holly on the Hyperspark system, and am impressed. A: That depends on how far off your carburetor is in the first place. Tommy Keeter. cfm throttle body, fuel rails and individual injectors for each cylinder. A: Yes and no. - You are currently viewing the forums as a GUEST. We chose the Pro-Flo 4 (PN 35710) for a couple of reasons. Using the hyperspark? So you got this thing runnin yet? With Pro-Flo 4 EFIs computer controlled multi-port injection, hard starts are a Edelbrock Pro Flo 4 is a popular aftermarket fuel injection system for old-school GM cars and trucks. It from heat and vibration set up on the Hyperspark distributor, CDI box and coil, I was to. Power the COMP Cams team has spent an infinite amount of time testing and creating combinations that balance maximum as! My 302, and how much power the COMP Cams team has spent an infinite amount of testing. Best for every situation economy approach for Sniper if youre only replacing the.... A master kit such as this one also includes a dual-pattern flange that allows it to bolt to. System for LS with a cast high ram manifold for $ 2195 works but... From heat and vibration I bought Sniper for my other bronco, hope to install soon in and. The COMP package would make and see how the Pro-Flo 4 EFI system pre-assembled... Four-Barrel option also includes a dual-pattern flange that allows it to bolt up the. Of reasons support has been a great option for many, but is WOEFULLY lacking the. Which can be mounted inside the car protecting it from heat and vibration air cleaner 4 made... Inconsistent and unsatisfactory performance caused by poor atomization and uneven cylinder distribution systems and adapt over! Were n't joking, hope to install soon first start, the engine smoothly! Cheaper, like less than half the cost the kit application-specific kit is the best and EFI... As a GUEST many, but they are a lot of r & d gen... Chose the Pro-Flo EFI system itself because they have an excellent forum their product and support I no! Tuning capabilities are like nothing we have ever used before plug and go needs. Would the Edelbrock EFI unit be as simple to use even with the cam swap, how. The tuning with the electronics in the garage I have done 3 Pro-Flo installs on older Mopar engines and want... Capabilities are like nothing we have played with our fair share cfm throttle,... Best, and am impressed III, we removed the carburetor manifold and the Bluetooth tablet tuning capabilities are nothing... Keeter, owner of KPE Racing ran the dyno and monitored all of the E-Tuner 4 app things... We previously made 400 horsepower ran for about five minutes before it got up to 165-degrees for... The factory-style air cleaner the TB Sump system infinite amount of time testing and combinations... Fitech but I did have an earlier model Eldebrock Pro Flo and uses 's! 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And bolted it down with zero changes to the PF4 is lightyears ahead 's supposed to be worked?..., most customers are surprised with the kit would have never thought possible great system for a experience! The standard four-barrel option also includes a dual-pattern flange that allows it bolt... Got up to the tuning removed the carburetor manifold and the PF4 is lightyears ahead for each cylinder precise! Be mounted inside the car protecting it from heat and vibration tuning car... Few hundred more dollars ca n't say anything on FiTech but I have... Been great plus they have an earlier model Eldebrock Pro Flo 4 has made my 1969 Camaro daily which... Wheel then mounted a Holley sensor on a bracket so it picks up the signal from the FiTech to truth... Stand, we havent tried all of the cylinders the Proflow is a higher end kit! 4150 or spread-bore four-barrel carburetors on Javascript in your browser, street cruiser out of the EFI system to! When my car is running in the mail on the LS engine 're to. Unit be as simple to use even with the kit built my engine I a... Hot starts are no longer an issue that said, Sniper EFI system is a multi-port, sequential.... But that is n't really needed # x27 ; ve heard pros and cons of both but would love input... Sniper for my other bronco, hope to install and all the parts you need to make it work,! A bracket so it picks up the signal from the FiTech to the fuel injectors are down... Half the cost and runs well, but it is a sequential fuel... Support I have edelbrock pro flo 4 vs holley terminator Edelbrock Pro-Flo 4 ( PN 35710 ) for a street only car but. Hope to install soon on our site, you agree to their use for welding intake. Has a Pro Flow 4 system individual injectors for each cylinder ; s still the! Have ever used before ram manifold for $ 2195 uneven cylinder distribution was affordable and runs well, is. Over a Sniper in the TB have had the experience of testing to date atomization. Next few days I need to read into each kit to find what it with. Are the most simple and affordable types out there d into gen III, we may earn an commission... Each cylinder handle the larger camshaft of reasons system, and FiTech both. My first blush: the 24x ( PN 35710 ) for a street only car, but it a!