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FACT: You can't make more power with an aftermarket muffler...
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Apr 25, 2008 | 06:49 PM
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Shawnkey
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Re: FACT: You can't make more power with an aftermarket muffler...
There is deffinately an increase. Most notable RPM range over 4500
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Re: FACT: You can't make more power with an aftermarket muffler...