Which is better for a LS tegra....a 4-2-1 or a 4-1 header?

 

4-2-1 imo. good balance of torque and hp gain. but most will prolly say 4-1.

 

It's not a simple answer. 4-2-1 is currently the most popular design b/c it creates a nice low end powerband, and if done properly, doesn't sacrifice top end. All of the headers that performed best on the header test, were of the 4-2-1 design.

http://www.honda-tech.com/zerothread?id=699674

 

i like my 4-2-1

 

I enjoy my 4-1 DC sports