I did the PI swap but i didnt change my headers because i ran out of money. Would i have seen a big improvement ? I head the stock headers flow pretty good unless your making serious power. Did i go wrong by leaving the stock ones?
Yeah i agree with D
one of the first mods i did was shorty's way back in 96 because i was used to gaining HP with them on 5.0's....man was i dissapointed! I started seeing dyno results with 2-3rwhp gains being posted in mags etc :'( Now that i'm getting blow they will help but a mild NA car won't need them.
i dont have pics of the install but i am lucky i decided to change them because the cam was digging into the head!! The head was ruined so i scrapped them. The car feels a lot more responsive and the sound has changed. It is deeper and more aggressive.