What do I need to do with my ecu? Anything else I need to do? Also car has p/s pump and ac compressor removed.

 

Send it to Phearable.net: Honda & Acura Performance Solutions

 

The OP has a 2000 Civic Si... the factory ECU is not tunable or chip-able.

OP, you would have to convert to an OBD-1 type ECU with an ECU jumper/adapter harness and then select a custom chip or tuning solution like Hondata S300.

 

What ecu do I get I'm confused with the whole p28 p32 thing. I know a bit about honda as well as all motors in general but ecu not so much. I know I need obd1 but I see different obd 1 ecu available. Thank you for the reply I appreciate it.

 

A completely stock engine does not need a new tune. You’ll gain about 5hp. Don’t waste your money. Put your AC back in, it’s hot.

 

throw some nice wheels and lower the car and drive it.

 

If your only 2 mods are ac and ps delete, keep the stock ecu.

If you have a turbo bolted on of some other crazy mods then run a obd1 jumper harness then look for an obd1 p30, p72, p28, p75, p06 probably in that order, manual preferred. Then get Hondata.