Hi, I had civic 95 MX D15B7 Manual (non-efi, non-vtec). There was no ecu either.

I have now put in D15B (vtec) manual. The ecu i have is PSA. I think its an automatic ECU. On top of that It has a rev limit on 4k rpm permanently. Can you please advise what other ECUs i can use to get rid of the limiter and be able to use vtec fully.

Also what OBD version should be used and how to install it?

thanks, all.

 

It's an OBD1 chassis so you should use an OBD1 ECU. search the forums. it's supposed to use a P08 ECU.

 

A bone stock P28 with a 4 wire O2 sensor will run that swap just fine, I ran mine that was for 5 years. Or you can get a P08 and run it with a single wire O2 sensor, or get another OBD1 ECU that's either already vtec or converted to vtec and chip it and run P08 maps.