Edelbrock efi

Its a great upgrade IMO over carburation, i plan to use the very same someday... is the 330HP engine using a roller cam or flat tappet, if the latter, you will have to meticulously break it in correctly and always use conventional oil with zince addative thats included in every quart you use for the life of the engine, do not add any more zinc addative or use synthetic of any kind.

Other than the difference being the #s/hr injectors to support different HP levels... could be that the fuel map program might be different to support higher horsepower levels depending on the model you choose, but i doubt that, so it could nothing more than an injector swap according to the minor price bump between models. Im sure the bigger injectors will NOT be dumping an excesive amount of fuel at low and part throttle since the ECM will be going by the O2 sensor reading to be more efficient, obviously more fuel support is needed for WOT depending on HP level of the engine.

Only thing I have heard is that the electronic portion is very outdated programming wise. Besides that it's a quality unit

Don't expect it to run perfect out of the box, especially with a dated ECM. My 300ish HP SEFI Olds 350 with the Terminator X Max stalls at least once every morning, on tune number 5. It is self learning but is kind of like the slow kid in class. I went with the Holley 450 LPH high output in tank pump with Holley 48# injectors, massive overkill. Putting out 65 psi, 64 psi, hammering the throttle around the corner with a 1/4 tank.

Ernest said:

Its a great upgrade IMO over carburation, i plan to use the very same someday... is the 330HP engine using a roller cam or flat tappet, if the latter, you will have to meticulously break it in correctly and always use conventional oil with zince addative thats included in every quart you use for the life of the engine, do not add any more zinc addative or use synthetic of any kind.

Other than the difference being the #s/hr injectors to support different HP levels... could be that the fuel map program might be different to support higher horsepower levels depending on the model you choose, but i doubt that, so it could nothing more than an injector swap according to the minor price bump between models. Im sure the bigger injectors will NOT be dumping an excesive amount of fuel at low and part throttle since the ECM will be going by the O2 sensor reading to be more efficient, obviously more fuel support is needed for WOT depending on HP level of the engine.

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Yes these are a true upgrade from carb life with all the separate injectors unlike the Sniper, but you are right about just different size injectors in them for the HP rating. The fuel map itself is all customizable depending on the info you put into it.

Streetbu said:

Only thing I have heard is that the electronic portion is very outdated programming wise. Besides that it's a quality unit

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Correct, it does give a good bit of info through a phone with the bluetooth connection that doesn't give you the IR problems that the Sniper is plagued by. But it does not data log or really have tuning options per say like a normal setup would have. But you do have options to change stuff through the app just really sucks there is no true data logging in the system. But I guess you can't have it all

My buddy has the PF4 in his AMC Javelin 360, and to be honest it's working really well. I will just say that it's made for guys that want to mostly set it and forget it with respect to "tuning", and programming other Engine Management type "functionality" that you would get in other systems.

For example, electric fans control is nice because it has two outputs but is limited in that it can only do relay trigger (on/off) control.

If you're an automatic trans, and you want to do some basic TCC (lockup converter) control, there isn't any of that, or any other custom I/O functionality.

You basically tell it what you want it to run as an AFR, based on a few of their canned tunes, then it will learn and closed loop self tune to that AFR. You can tweak a good amount of fuel controls, but it won't be in the form of advanced tables with a laptop and extensive control.

One of the nicest features is it's use of an android based app you can run on your phone, or a tablet to adjust, and monitor engine params live while driving. They just recently added a data logging feature which immensely improves the system imho if you're trying to resolve an issue.

All in all, I like it very much...the fact that it comes with an INTAKE, THROTTLE BODY, DISTRIBUTOR, etc, for the cost of other systems ECU only cost makes its a great choice. Especially if you want to retain the old muscle car, round air cleaner look under your hood.