noob here i would like to know what kind of ecu comes on the 91 civic si hb
i just did a ZC SOHC swap and the stock ecu is working fine but i would like to know more about what kind of ecu's i can use for these motor any info will help THANKS

 

ok the stock ecu in a 91 si hatchback is a PM6

The 88-89 Integra ecu will work good also

 

The SOHC ZC is a D16A6 so your ECU is perfect.

 

Oops i shouldnt of scanned trough the post so quick i was thinking he had a dohc-zc

 

can i reprogam or chip this to get the best out my motor? where do i look