Estimated power gains
I have a 89 auto 5.0 I just made a order from AM consisting of a set of long tube headers, off road H pipe, cai, 75mm t body, 75mm egr spacer, and a aluminum drive shaft. What do you think my gains will be? The car already had a cat back.
02 GT 5 spd. Best 1/4 12.28 @ 112mph