2.5l and backpressure
I know you need some backpressure fpr low end and what not, but when is it too much??? when ever I downshift, or I am in between shifting my jeep make a pretty loud blat blat blat noise out of the tailpipe, is this normal, I have a flowmaster 50 series and a high flow cat. But the main question I am asking is it ok to have that much backpressure?
Black 1994 YJ 2.5L