stock headers are very restrictive and so is the exhaust. This is due to comply with emissions law etc. headers giv more power than a cat back exhaust and help the engine flow better.
go for it. also with the 4-1 u need to rev ur car out to make the most out of the power. Thus make sure u have good quality oil at the reccomended level ALWAYS.
When my standard exhaust manifold cracked i purchased 4-2-1 extractors (i think they're 4-2-1). I'm not exactly sure the difference between the standard exhaust manifold and extractors - but my torque is MUCH better with the extractors.
PS - I get confused by all these different names - headers and exhaust manifold are the same thing?
hey i have a new avatar...look at it please. yeah i think its a matter of experience. try one then the other just take your time so you can enjoy both then make your decision.
alot of the 4-1 headers sit very low so be careful.
The x-force ones copy the JDM 4-1 so don't sit as low.
That's as much as 1 pipe length difference. Can be a real pain if your car is even the slightest bit low.
Bookmarks