Quote: My engine builder said that extrude honing the exhaust manifolds would probably not have any effect on my engines performance/speed/time. It may be something that the top F.A.S.T. guys are doing looking for any millisecond advantage, but certainly not worht the money that it cost for anyone else.
But it looks cool! I've seen those done.
When driving gto/from Carlisle I see the ExtrudeHuone company off the turnpike by Pittsburg I think.
