Thread: Giant Muffler
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Old 01-06-2012, 05:58 PM   #1 (permalink)
4banger
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Giant Muffler

I just bought a 2001 cavalier and the previous owner put a huge muffler on it. Im wondering if it is helping or hurting my fuel efficiency. Basically what Im asking is should i keep the aftermarket muffler or straight pipe it.
I feel like the larger muffler would help exhaust flow but a smaller straight pipe would help velocity. i just dont know which is more important.

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