Join Date: Jan 2003
Location: charlottesville, va
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Exhaust/air flow questions
will try to keep this short as possible....
Jeep: '92 YJ, 4.0, I6, 3" BDS suspension lift, all else stock
Problem: Cracked manifold and big dent in front pipe where it bends off the manifold to parallel the ground (which may be restricting flow).
1. Difference between manifold and header? (from what i've read, headers provide more air flow and can be tuned, but don't offer any benifit to low end torque and benifits are only in the upper rpm ranges anyway, is that all?)
2. Sounds like if I replace my manifold with an OEM part, then it will just crack again. Gale Banks and Borla have lifetime warranties on their manifolds/headers, but are these headers or manifolds, cause they all look the same? It seems these terms are sometimes interchangable.
3. Since I have to replace manifold and front pipe, I might as well upgrade the whole system right? But it sounds like if I put on headers, there are no benifits without intake upgrades as well. Is it the same with the high end manifolds?
4. Suggestions to intake upgrades? (I've read that K&N filters aren't what they're cracked up to be)
I could care less how it sounds, looks, or how fast I can go on the highway, but I wouldn't mind a little more power for the trails.
sorry for the long post.........