Quote Originally Posted by flakez View Post
i'm using 4-2-1 headers for daily driving. pero sabi nila yung 4-2-1 na midrange tapos 4-1 na pang top-end is already a thing of the past. hehehe. kaya hindi ko na din masusuggest yung tamang header design for you.
Actually its a matter of matching the proper exhaust layout for your engine's performance to maximize it's gains.