Q. do i should re pin the distributor inside the 930ecu? A. either you utilize P30 or P28 ECU, you'll even now re-pin the distributor if you can utilize the b16a2 distributor because it's OBD2 and your harness is OBD1I realized On this thread which the rear differential fluid receives flagged sometime close to 15k and afterwards at about 60k later.