blackskylinegtr
Member
- Joined
- Sep 9, 2009
- Messages
- 285
Hi all
Ive read a thread that states the best exhaust exhaust is straight through and less bends to max the air flow. My question is I'm going for a map soon and wonder should I keep my existing border 304, 2.25 straight through pipe (no cat and no mid box and goes under the axle and all slip fit) or go for a 2.5 system? Other question is Does the 2.25 compensate 2.5 without having the mid box and bends.
I have a b18cr with a 5zigen 4-2-1, 2.5 collector manifold.
Ive read a thread that states the best exhaust exhaust is straight through and less bends to max the air flow. My question is I'm going for a map soon and wonder should I keep my existing border 304, 2.25 straight through pipe (no cat and no mid box and goes under the axle and all slip fit) or go for a 2.5 system? Other question is Does the 2.25 compensate 2.5 without having the mid box and bends.
I have a b18cr with a 5zigen 4-2-1, 2.5 collector manifold.