This might be a stupid question, but how does changing the exhaust manifold change the consumption of fuel? Is it just because it's a smoother flow of exhaust therefore it's easier for the engine to burn then spit stuff out? I never really got in great detail why different exhausts gave different performance boosts...havent really noticed fuel yet, but i put my custom designed and made 4-2-1 manifold on aswell, so im expecting to to go down a bit,
I assumed since you posted in a K10 request thread that it was a K10. :down:somebody else showed an interest, but i think he,s got a k10