Alright y'all. I've been poking around trying to get some answers, but to no avail. If you follow my build thread you know I scored a deal on a wrecked 95 GSR (OBD1). I'm keeping the engine for my 98 LS (OBD2A). I already have a jumper harness to run my ecu, I'm running an OBD1 ecu currently for my B18B. I know the B18C will bolt in without issue, but I'm having trouble getting my wiring questions answered. What is necessary to add? I know I have to add wiring for VTEC to function properly, but what about IABs and a knock sensor? Is a rywire sub-harness the best route to add everything and save myself from tearing my chassis harness apart?

 

Alright guys, I contacted David at Rywire and got this all straightened out. Their OBD1/2A subharness will work regardless, but I have to wire it in prior to the ecu jumper. He said that the ecu jumper already has wiring for vtec/iabs/knock. Thank God these guys have been doing this for years.

 

If you want it to look stock just use the GSR engine harness and pin the extra wires from the shock tower to the ECU,