My question is , if you convert to obd1(p28), my car is a 88 si, how would you go about getting the p28 to go into diagnostic mode to set timing once you either repin the ECU connector or get a conversion harness?. Would anything change? Or do I just jump the connector in the engine bay as usuall. Ive searched and come out empty handed.

 

it is the same as any other ... nothing different

 

Thanks for you answer.

 

quick response ftw