Header Question
Pro
Joined: Jan 2011
Posts: 708
Likes: 1
From: Blaine Minnesota
Next year I plan on headers, cat delete, bigger injectors and E-85 (with npp). I am thinking from forum only experience that I can get 450-460rwhp. e-85 alone has put around 425rwhp in an mn6. My bone stock ls3 on a 98F ambient day put 381hp/362tq to the wheels. Good Luck and let us know how it works out numbers wise please.
Drifting
Joined: May 2011
Posts: 1,728
Likes: 36
From: TX / CO
I'm thinking of making a few performance upgrades to my '11 GS coupe (6spd manual) with the goal of increasing low rpm torque and achieving 500+ hp. The plan includes adding the Halltech Beehive air induction, a slightly hotter cam, headers, and a tune. But I'd perfer to NOT cut the factory NPP exhaust.
So the question is this: Are there headers out there that replace the stock factory manifolds without modification to the exhaust system .... and what is the performance difference between the short tube vs. long tube designs?
So the question is this: Are there headers out there that replace the stock factory manifolds without modification to the exhaust system .... and what is the performance difference between the short tube vs. long tube designs?
