will i am using a p72 and my CR is gonna be around 12:1 hopefully maybe a lil higher and it is a obd-1 gsr.. yes I know about building up oil pressure and non detergent oil .. i never heard about the rad cap trick before.. but my car is obd-1... i dont think the car would bring it down...but either way i dont wanna take that chance.. I ordered my wideband and my car has a fuel rail and regulator.. so I figured when i start it I can read the wideband adjust the fuel regulator to bring it where I want it.. I just dont really know how to adjust it..??????? my tuner wants me to run the car for a while.. making sure the idle is ok... there is no leaks... car aint shutting off.. basically that it is runing good.. no point in towing it all the way to the dyno and having it mess up on the dyno... thank you