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Exhaust question.
The exhaust I have now leaks a bit so I need to change a few things. My question is how long off the header to the muffler and how far past the muffler will make or retain horsepower? Ideally I would like the muffler right off the head bolts and a turn down right after as long as it doesn't take horsepower away or try valves.
Any input is good
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