chip for a 92 iroc same as 91 vette?
Melting Slicks
Joined: Oct 2006
Posts: 2,238
Likes: 10
From: College Station TX
Re-read his post. He said a 92 IROC, which would be TPI still. Also, he said L98 C4. So the chip would actually work, but a it's certainly not a good idea.
Team Owner
Joined: Dec 2000
Posts: 21,094
Likes: 282
From: Phila., PA burbs
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Melting Slicks
Joined: Oct 2006
Posts: 2,238
Likes: 10
From: College Station TX
Team Owner
Joined: Dec 2000
Posts: 21,094
Likes: 282
From: Phila., PA burbs
I bought a Jet Stage 2 chip for my 91 years back and took it to the track for testing just as Mojave suggested. My stock chip was .2 quicker than the Jet chip. Needless to say I promptly sold the chip on Ebay for what I paid for it.
Melting Slicks
Joined: Oct 2006
Posts: 2,238
Likes: 10
From: College Station TX
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
They interchange and that is about it.
If comparing stock for stock, the Vette chip has very different programming from the F-body on account of the alum heads.
Different spark / fuel programming ( more aggressive ) to start with.
TCC , EGR nearly every setting is different
Stock F-body chip would prob run car slower in Vette.
The Vette ECM has a data link to the CCM that the F-body doesn't.
If comparing stock for stock, the Vette chip has very different programming from the F-body on account of the alum heads.
Different spark / fuel programming ( more aggressive ) to start with.
TCC , EGR nearly every setting is different
Stock F-body chip would prob run car slower in Vette.
The Vette ECM has a data link to the CCM that the F-body doesn't.
Burning Brakes
Joined: Nov 2004
Posts: 800
Likes: 3
From: Port Orange FL
I tried sticking an extra custom burned chip I had laying around that was for an 89 IROC in my wifes 87 vette. It ran, but the fans stayed on all the time as did the check engine light. I never tried to drive the car with it in or investigated the code, I just pulled it out and swapped them back.
Roy
Roy
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
The chips interchange across the same type of computer.86 -89 90 -92
However as I previously posted there can be lots of variations even in the same model as to auto / man , fed / ca emisson , etc calibrations.
Any chip should start and run the car but will not be optimum for either perf or economy
However as I previously posted there can be lots of variations even in the same model as to auto / man , fed / ca emisson , etc calibrations.
Any chip should start and run the car but will not be optimum for either perf or economy
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
They also don't use the "same" computer. The vette uses a '727, which
is damn similar. For example, I can run a Vette binary in a '730 ECM
(which oddly enough I'm running on my '87 vette), but there is some
inputs that only exist on the '727. You can't interchange them, the connector is different. ('727 being a weatherpak ECM)
For $10, if its a complete chip with a resoldered prom it's a steal. Not because of the programming, but because finding
730/727 memcals has become a PITA, and it's always good to have a backup memcal. If it has a soldered
ZIF on it it's an even better deal. You could buy it, and turn a profit.
-- Joe
Last edited by anesthes; Feb 21, 2008 at 08:52 AM.
