x pipe gains?
2nd Gear Member
Joined: Sep 2010
Posts: 446
From: Northern Virginia ( Arlington )
Wil
Big difference between "all" restrictions and removing cats or open up headers or removing mufflers. If you took the exhaust manifolds off, that would remove all restrictions and cause a whole host of problems.
Removing Mufflers or cats or opening headers will reduce restrictions and anyone will increase HP and Torque. You still have to have SOME back pressure to function correctly. Tuning exhaust is an art. To much of anything is not good.
Big difference between "all" restrictions and removing cats or open up headers or removing mufflers. If you took the exhaust manifolds off, that would remove all restrictions and cause a whole host of problems.
Removing Mufflers or cats or opening headers will reduce restrictions and anyone will increase HP and Torque. You still have to have SOME back pressure to function correctly. Tuning exhaust is an art. To much of anything is not good.
3rd Gear Member
Joined: Feb 2010
Posts: 627
From: Norfolk, VA
This isn't the 70s any more; CFD and FEA mean exhausts are pretty much 95% optimized from the factory. This is, of course, on cars where the exhaust is more than an afterthought. On, say, a Cruze, an exhaust will probably get you a few HP.
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