PLEASE HELP!! Cant find an answer to this!
I have a 99 Si with a GSR swap. My issue is that the car will not shut off when I use the OBD1 ECUs (P28, P72) with conversion harness, but as soon as I plug the stock Si ECU OBD2 (P2T) it shuts off just normally. I have used a few ECUs and have exchanged the conversion harness also and still does the same, only shuts off with the P2T. So, of course I want to use the OBD1 ECUs but cant figure out how to make the car shut off besides stalling it.... Could someone please give me some insight on what to check or do so I can use the OBD1 ECUs and be able to turn off the engine? Thanks