any help on the wiring I would need to swap a b17a in my 91 crx si?

 

well you are already wired for fuel injection so youll have to wire in vtec and and swap over to obd1 if you want. you can get complete wiring harnesses from hasport and i think maybe hcp too. then all you have to do is plug it all in.

 

Is this for the complete Harness? Do I need to use the stock si harness? Thanks

 

yes, you use the stock Si harness on the b17a. if you want to keep the motor obd1 and use the b17a obd1 ecu, then you will need to hack off the distributor plug from the b17a harness and wire it up in place of the Si distributor plug on the Si harness. then you'll need an obd0 --> obd1 jumper harness, and you'll have to run extra wires for VTEC, Vtec Oil Pressure Sensor, Vtec Oil Pressure Sensor Ground, Knock, & 4-wire o2 sensor.

 

you can re-pin the distributor plug instead of hacking and soldering

 

awesome! I appreciate the help