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Old 07-31-2009, 03:06 PM   #1
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is a 90 corvette ZR1 the same ecm as a 90 third gen???
thanks
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Old 07-31-2009, 04:29 PM   #2
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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.
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Old 07-31-2009, 05:12 PM   #3
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Re: is a 90 corvette ZR1 the same ecm as a 90 third gen???
Quote:
Originally Posted by RBob View Post
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.
i just found out they are the memcals and everything just the mask , etc are diff, as is with all our cars...
thanks for your help!
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Old 08-01-2009, 08:27 AM   #4
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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.
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Old 08-01-2009, 11:20 AM   #5
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Re: is a 90 corvette ZR1 the same ecm as a 90 third gen???
Quote:
Originally Posted by RBob View Post
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.
yes, the memcal's contents will be scrapped, bin read into tunerpro manipulated, for hardware changes....

again thanks!
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Old 08-01-2009, 11:20 AM
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