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Originally Posted by twitchy
Hey all
This might be silly but its new to me....
Heres my current exhaust setup:
Stock manifold
Stock Cat
no resonator
half inch oversize plumbing
stock muffler
what I wanna know is when i install my header, would it be totally useless if I just upgraded the cat and kept everything else the same?
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I am kinda interested in this myself! I want to have my header in before I have my high flow mounted,and my exhaust bent up....so I am only mildly interested b/c I won't keep the other stuff stock long....ANYWAY
Twitch-I think it will improve performance,but minimally....I know people who have done headers on a otherwise stock V8,with stock exhaust,and it made a nice difference,but I don't know about the 240