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-   -   S4 to S5 conversion (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/s4-s5-conversion-349830/)

rotaryrex7 09-19-04 10:52 AM
S4 to S5 conversion
 
Sorry fot the double post but I thought this may get more traffic over here, I have it posted on the Engine mgmt forum anyway.

I have an ITS 2nd gen racecar with a S4 ECU. I would like to convert the electronics to an S5 ecu, maf, OMP and injectors to be able to plug and play a spare S5 motor that I am rebuilding. As a racecar all the emissions have been removed so the harness is down to the maf, injectors, cas and tps.

Can I simply bolt in the S5 ECU and use the S5 harness?

J-Rat 09-19-04 02:43 PM
The harness pinouts are different..

rotaryrex7 09-19-04 06:05 PM
The harness pinouts to what? If I bring over all the S5 attachments ie omp, maf, injectors etc. what pinouts would be wrong?

DerangedHermit 09-19-04 06:08 PM
The wiring harnesses aren't compatible.


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