chiaxi2002
Well-Known Member
Is there any power difference between the 2? I am debating if I wanna spend the extra money on the 4-1 headers.


4-1 focus on high end rpm
4-2-1 focus on mid range rpm
I think.....![]()
4-1 focus on high end rpm
4-2-1 focus on mid range rpm
I think.....![]()