ive heard that when you get the harness from the obd2 and convert it to the obd1 it doesnt read that fast due to the harness..i think its wacked but can anyone help..also how power or can what can i expect from changing to obd1 except sensors?

 

im not sure about the slowing part, but if your not tuning it and leaving a base map you most likely will not see any gains if you tune it who knows