Ok guys, I recently installed my exhaust(James Dean exhaust the works) about two weeks ago and now I'm noticing what I beleive to be back pressure. Every time I hit 2500rpm and 55mph or higher my car starts hesitating a bit (rpm goes up and down). This all happened when I got my exhaust. Does anyone think it might be my pcm? Should I just buy a new pcm from intense or something? Can someone shine some light on this. I'm also about to get my Pem's so maybe that would help. I'm sure it wouldnt be doing this if it had a leak on the exhaust right?
