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Old 01-09-2010, 05:57 PM   #26
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Originally Posted by gokart2 View Post
Im in a related field.
Good! You are now our resident expert!
So what do you think? Would a wrapped header/flex pipe retain enough heat to warm a retail aftermarket HF cat (OR a racing cat) as quickly as the OEM setup? Would a cold header/flex pipe act as a heat sink initially to rob the cat of startup heat?
Is +750*c (1382 degrees Fahrenheit) typical for a gas engine? Or could you obtain the EGT of a Duratec engine? Is that the light-off temp for a cat?
I specified header wrap as from my reading it retains more heat (I.E. works better) than a jet coat or similar.
I did not specify wrapping the cat as I don't know if doing so is recommended. Would the cat burn out prematurely?
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