Has anyone replaced the Fiero V6 fuel injection control system and computer with a new stand-alone aftermarket EFI system? In one of my old Hot Rods, May 2005, there's an article about the different EFI systems that are available. Painless, FAST, etc, seem to be several to choose from. I wondered if anyone had successfully adapted one to our cars. If so, how do you like it? How difficult?
If it would work, wouldn't this cure many of the ills of our 20 year ignition systems?
------------------ RickN White 88GT 5spd White 85GT Auto White 99 F250SD 7.3PSD 6spd 1956 Ford 860 w/ Freeman Loader
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09:37 AM
PFF
System Bot
Fiero801 Member
Posts: 65 From: Salt Lake, Utah, USA Registered: Nov 2005
right now I am in the process of putting a Haltech E6k into my turbo '88 GT, the system is not overly complicated but I wiring is not my strongest talent so I am going to have it installed. (sure I could figure it out, but dont have the time). with the standalone you can also tune by "seat of the pants" but I would recommend having a qualified tuner dail it in on a dyno. As for fixing ignition problems, could'nt hurt and I would imagine that it would be beneficial scince you have a newer faster higher performing ECU in control of all engine parameters.
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11:22 AM
darkhorizon Member
Posts: 12279 From: Flint Michigan Registered: Jan 2006
most times it's simply not cost effective. whereas the stock FI system does have some flexabitly if you can burn or get chips. you would likely see more gains for the $$ by putting that money elsewhere. Also not all aftermarket stand-alone ign/FI systems are great. the ones that are can be quite exspensive like Electromotive.
IMO, the 1985 Fiero ECM has everything that you need for turbocharged engine management plus it provides easy scanning of all sensor outputs and offers the diagnostic codes. While you can get an aftermarket ECM to work, why bother when GM has already done all the work for you to establish the baseline. As for tuning, you can purchase a number of programs that enable easy program changes or go to a guy like Ryan (Darthfiero) who offers programming support.
------------------ 87GT 3.4 Turbo- 0-60 5.2 seconds 2006 3800SC Series III swap in progress Engine Controls, PCM goodies, re-programming & odd electronics stuff " I'M ON THE LOOSE WITHOUT THE JUICE "
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08:40 PM
Sep 24th, 2007
Will Member
Posts: 14275 From: Where you least expect me Registered: Jun 2000
A GM 7730 is hard to beat for capability, programmability and program features... It's not a hard swap, either.
The 7730 ECM is an easy and quality ECM to work with, its speed density based and I would agree that the rewiring task is easy. I believe only 4 or 5 wires need to be moved. However if you examine what are we concerned with on turbo engine management its pretty simple- constant tables, fuel tables, timing tables, PE tables, tranny control (if needed) and the knock sensor capability. The 85 V6 Fiero ECM gives you all the same capabilities so I really cannot see any advantage to using the 7730 on a V6. If there is an advantage please pass it on.
------------------ 87GT 3.4 Turbo- 0-60 5.2 seconds 2006 3800SC Series III swap in progress Engine Controls, PCM goodies, re-programming & odd electronics stuff " I'M ON THE LOOSE WITHOUT THE JUICE "
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09:52 AM
Will Member
Posts: 14275 From: Where you least expect me Registered: Jun 2000
