Originally Posted by
sherwood
whats the difference between the obd-I and OBD-II p75? wasnt there an OBD-I p75?
Yes, there was an OBD1 P75. It is just like the P72 which was available in OBD1, OBD2a, and OBD2b. I believe the fuel and ignition maps are identical, but the sensor control is different.