Contour Enthusiasts Group Archives Forums Modifications Duratec Performance Attn: Bnoon and everyone! Q about exhaust

Still not worth it to chance it to do it on the car, Terry's words, not mine. Even with the vacuum it will blow around enough to get back into an open set of valves. I use the same method when I gut them on my bench and there's always some that poofs out when the top is broken though... Maybe it'll take video proof for you to realize...

Nick, engine life should not be effected with this mod so long as you get a good set of MIL eliminators.