Originally Posted by roddy1
there are dyno tests on one of the ranger sites, that show the JBA headers gaves ZERO horsepower gains....
They improve if you have teh exhaust combination to help yoru entire engine breath better
Changing headers on a stock exhaust wouldnt do scrap for ya, because its putting the same amount through that it would normally, with only a very minimal change. I can tell from what I've noticed with my JBA ceramics and full exhaust in and out. there is a noticeable difference once you do the complete change from intake to headers to exhaust.. I'm debating on getting some new cats down teh line.. but the stockers are doing just fine for now.