I need ur guys' input in this self tune fuel injection system i saw on Horsepower TV.

Carb-to-EFI Conversion Has Never Been EZer

it looked good so i found the site and read the "Instructions" link (PDF file)
it looks like a good solid system (a bit pricey) that can adapt to nearly any engine.
And its got alot of nice touches too.
Like it can control the fan, and fuel pumps, and if u hook the A/C to it it will bump up the Idle AND turn on the fan for cool air

The reason im even looking at it is because i will Eventually put a 332 stroker in my truck. (not sure which one yet but prolly the 95)
And i know i want to do some upgrades to the 95's current engine (gt40 heads headers etc..)

that would leave me with 4 options for a fuel delivery system.
1.keep the stock MAP and have some kind of custom tune done
2.I was thinking of MAF but my engine guy says that when you stroke an engine it creates pulses in the intake messing up the MAF sensor (he has 20 years xp)
3.Carb, this is what my engine guy recommended it sounded good but I would really like fuel injection if at all possible
4.This EZ tune system, with this system i could do the little upgrades to my current engine and when i get the money to do the stroker i can just erase the "Learning" and be on the road in no time

AND b4 u dismiss it altogether i ask u to read the instructions if u have some free time and then put down your opinions.

Thank You For Your Opinions

 

I don't have time to read thru the instructions, and I don't know anything about FAST, but just be careful. When a company is advertising "how easy it is," keep in mind that it's easy FOR THEM. Why? Because they designed the system and have installed it countless times.

I don't know how experienced you are with engines but personally I am leery of anything that's a "bolt and go" modification. It's almost never that easy.

But it's your truck, you decide what you want to do with it. The only thing I can recommend is that you do more research on FAST and this particular modification. Google it, look them up on the Better Business Bureau website, do something to research it. I recommend going to google, yahoo, excite... any other major search engine you can think of and just search them. If there's anything negative to be found it will likely come up.

 

sounds good ill do that now

 

Looks like an awesome setup if you have the extra money. One issue you might have is dealing with emissions at inspection time, plus you would have to figure out what to do with things the stock computer controls, ABS, auto transmission. I say go MAF, it shouldn't have an issue being stroked, all you would need to get max power out of it is a dyno tune.

 

"Something about the system as for as horsepower rating;
the injectors are actually 88lb/hr@ 58 psi. The fuel pump in the kit won't do this, but... if you have a pump that can support it, the injectors can flow enough fuel to support 700hp @ 58psi on a normally aspirated motor."
(POST # 77)
http://forums.corvetteforum.com/c3-t...his-yet-4.html

This is something I found searching
And this post is by a guy who actually helped Design the system

I about fell outta my chair when i saw it could do 88lb/hr at 58 PSI good god thats alot of fuel (considering stock are #19 or #21 lb/hr)

 

1. Im lucky where i live emissions aren't tested at all
as a matter of fact i had my truck (87 lariat that is now junked) pass inspection and we literally had to PUSH it into the shop (in tank fuel pump problems)

2. Im a manual tranny freak If you read the trucks in my sig you'll see there both manuals so i dont have to worry about that
Oh and i dont think i would lose any sleep over not having ABS

The only thing im worried about is the climate control in my 95 cause its all electric, and im not sure if it has to co through the computer or not

3.Im afraid that i have already decided MAF isn't an option Maybe if my truck had MAF from the factory i would see if it would work but since it doesn't im not gonna spend the time and money on installing one if there is even a small chance it wont work.

Right now the debate (for me) is between the FAST system and a Holly carb

 

Just so you can sleep easy at night, the RABS is a stand alone system and will not notice any change.

 

FAST has been around for a while now, they're fairly popular in the Street Rod scene, and have been for years. Now while I may not believe their claim of "Plug n go", I am inclined to believe that it's going to be a minimal pain in the **** to get this system up and running. I've dealt with their systems before (although admittedly not the "EZTune") on small block chivies, and even their earlier systems required a minimum of messing around with to get everything going...

 

If you are really planning to only go with GT40 heads, mild cam, headers and a small stroke I see the FAST system as overkill. FAST is well known in the performance arena, but good golly ~$2200 USD for the Master Kit? Your stroker even with Speed Density can be tuned to run with the correct cam. The Lightning guys do it all the time (they also came with SD from the factory).

In my opinion a stroked engine is not going to inherently cause large pulses that will affect a MAF or a SD system either. It's the camshaft characteristics that can cause intake pulse issues.

Plenty of threads running around in truck related forums with good info for how to install a MAF, compatible PCM and some minor rewiring or swapping in the injector harness. Depending on how wild the cam is going to be the MAF system could be run as-is and still provide plenty of power. With the money you saved by scrounging parts you could find a shop to tune your ride for a little more power/MPGs or invest in a Tweecer or Moates Quarterhorse to tune it yourself.

 

the gt40 heads, cam, and headers combo is only the first stage i have planned
down the road i want to do a performance stroker build
so that would mean a complete re-tune of the PCM (after i had already spent the time and money getting to work in the first place) where as with the ez-efi system i could just start a new tune and in a few weeks be at %100 peak power (or at least close)
that is the reason the EZ-EFI system looks so good is because it can adapt to just about anything i can throw at it

You would be right IF i needed the master kit, but you need to remember that both my trucks have efi on them
Which means a vented fuel system, hi psi pump, and return lines are already there so i would only have to adapt them to the EZ-EFI system. which costs about $1700 (which admittedly is still alot)

the thing is i want to do (in my performance build) is put the biggest cam i can that will pull just enough vacuum to run my brake booster

The thing with that is.. that was my first plan so i have already done alot of research on that subject, but when i told my engine guy about that he told me with the setup i want to run (in my performance build) would cause pulses in the intake (at least a little) and mess up my MAF readings
The whole point of this is the fact that MAF wont work and MAP will have to be reprogrammed and i dont know of any shop that can do this around me nor would i trust my truck with a shop i dont know about / dont have a recommendation to go to.

 

Now that we know what your intended components and end goals are it makes sense why you what to consider a FA$T system. I was going to slap you for considering the trick EFI system if you were going to stay with GT40 heads. They only flow so much compared to almost any off the shelf aftermarket head out there today. Propping them up with a wild-assed cam will most likely cause issues with the factory based SD or MAF injection.

Having a custom cam spec'ed for the engine to make real power instead of a lumpy idle will help whether you are staying factory PCM or aftermarket. But in the long run having the ability create a true custom tune would make me lean towards the pricey FAST injection system.

Sounds like a great project. Good luck and keep us posted

 

Sorry but your engine builder obviously has very little EFI experience, what he is saying simply isn't a problem. How is it all those 5.0 mustang guys manage to make 347 and 408 strokers with big heads and monster cams work with the Ford EFI system? Simple.. they add a tuner like the Tweecer or Moates chip and start dialing it in. These tuners offer the ability to burn new tunes as often as you want, and you just might be doing lots of small adjustments if you want to maximize the potential. Any EFI system is going to be more complicated to install than a carb, and fine tuning may take longer but it has the potential to deliver better results too if you put the time into it.

Does your truck have an auto or manual transmission? If it's an auto then that tilts the table in favor of a Ford MAF setup since it also controls the trans.

 

Intake reversion pulses from large cams and/or forced induction can have a negative influence on the metering capability on a standard MAF meter. Yes, the Mustang crowd has been able to make power with outrageous cams/heads AND a good bit of tuning with various add-on devices. There are manufacturers of MAF meters with filtering capabilities to eliminate the problem. Abaco Performance is one of them. Anderson Ford Motorsports in Clinton, IL is a well known Ford/Mustang tuner. They were recently referenced in a 5.0 Mustang magazine tech article using the Abaco DBx MAF meter. Their own catalog lists the Abaco DBx meter for use where intake reversion and/or pressure pulses is an issue.

 

Conanski u are right in the fact that he seems a bit older school when it comes to engines (hence why he was the one who suggested the holly carb)

but the thing is while i LOVE to tinker with electronics and stuff i just dont need to get every last horsepower out of the engine.
this is not a toy vehicle this will be my daily driver and i think i can live with being short a couple of HP, or who knows maybe it will get every last HP out of it.

plus i just dont have the equipment (or access to) or the time to tune an engine properly

if u read in my sigs you will see that both of my trucks are manual
and the same question was asked by 'fordinlinesix' and was answered (no tryin to sound snippy or anything)

 

I would just switch it over to a nice mass air system , then find a good dyno tunner to burn you a custom chip for about $600.....Lew