ZC engine ECU?
 

A friend of mine bought a 90 Civic DX with a ZC engine swap. He asked me to
check the timing, and I noticed it was 0* TDC at Idle. I tried to adjust
the distributor but at max, I can only get 10* BTDC. His ECU is a PM6 (Si
ECU). I reading that the 88-89 Integra ECU is compatible as well as a ZC
ECU(PM7). Can anyone tell me if the Integra and ZC ECU the same?

TIA

JW