5.0L Tech
I have an issue with my 90 mustang, the engine is a 306, ported e7's, bbk shorty's, off-road x, 30# injectors, MSD, GT40 upper and lower, 65mm tb, 70mm mass air, bbk cold air. My problem is that just recently the check engine light came on and is on everytime i start the car, but i can pull out...