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Yea. I only wrapped the MRT system, so only from the resonator back. You could wrap more and trap more heat in the exhaust but I'm just testing.
More heat in exhaust decreases exhaust pressure, makes it more free flowing. It might help, and it's cheap. If it rusts out the exhaust oh well, I'm not married to it.
I'd suggest not wrapping up to the cats. They can overheat when tracking the car.
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