exhuast mani
 

im a tard, but i keep hearing about Exhuast manifolds. isnt that just the same as saying header? or is there something im missing? i know it has vavles ect on the head. but is there some part im missing?

exhaust manifold usually refers to a stock part whereas a header refers to an aftermarket part i believe

usually exhaust manifolds are reffered as the crappy cast iron heavy ass pieces, while the nice tubular light are reffered to as headers

man, this is well over a decade old.

Tubular headers look nice, especially with a shiny finish, but I wonder about the gains? I have seen people experiment with a whole custom system hooked up to an LS2 V8, and although it had a larger diameter, didn't produce any dyno improvement, just made the car louder. Eventually with a 3 inch system they made gains, but I'm wondering about the whole cost/benefit angle on this mod? I think ECU tuning offers more HP for the $$$.

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