is a 90 corvette ZR1 the same ecm as a 90 third gen???
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Joined: Dec 2008
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From: So Pasadena, CA
Car: 1989 Chevy Corvette
Engine: 383 SuperRam 10.7 AFR 195 220/229
Transmission: Fancy Smansy 87 Corvette 700r4
Axle/Gears: 3.33
is a 90 corvette ZR1 the same ecm as a 90 third gen???
thanks
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From: Chasing Electrons
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Re: is a 90 corvette ZR1 the same ecm as a 90 third gen???
Most likely they are not the same. I know that from '91 and newer the ZR-1 ECM's are not the same as used in the TPI cars.
If the '90 ZR-1 is SFI, which I believe all ZR-1's are, then it is a different ECM then the '90 TPI. The TPI ECMs are all batch fire.
RBob.
If the '90 ZR-1 is SFI, which I believe all ZR-1's are, then it is a different ECM then the '90 TPI. The TPI ECMs are all batch fire.
RBob.
Thread Starter
Member
Joined: Dec 2008
Posts: 145
Likes: 0
From: So Pasadena, CA
Car: 1989 Chevy Corvette
Engine: 383 SuperRam 10.7 AFR 195 220/229
Transmission: Fancy Smansy 87 Corvette 700r4
Axle/Gears: 3.33
Re: is a 90 corvette ZR1 the same ecm as a 90 third gen???
thanks for your help!
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From: Chasing Electrons
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Transmission: check
Re: is a 90 corvette ZR1 the same ecm as a 90 third gen???
The '90 & '91 ZR-1 used the 1228331 ECM.
The '92 through '95 ZR-1 used the 16163993 ECM.
Which neither of is used in a TPI setup.
The MEMCAL may be interchangeable. But as you mention the mask/code is completely different.
RBob.
The '92 through '95 ZR-1 used the 16163993 ECM.
Which neither of is used in a TPI setup.
The MEMCAL may be interchangeable. But as you mention the mask/code is completely different.
RBob.
Thread Starter
Member
Joined: Dec 2008
Posts: 145
Likes: 0
From: So Pasadena, CA
Car: 1989 Chevy Corvette
Engine: 383 SuperRam 10.7 AFR 195 220/229
Transmission: Fancy Smansy 87 Corvette 700r4
Axle/Gears: 3.33
Re: is a 90 corvette ZR1 the same ecm as a 90 third gen???
again thanks!
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