Muffler replacement huge horsepower gains!

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#2 (permalink)

03-31-2009, 09:37 PM

RodKnock

Senior Club Cobra Member

Join Date: Feb 2007

Cobra Make, Engine: KMP 539, a Ton of Aluminum

Posts: 9,592

Not Ranked

Will you be testing the Hushpowers, which are made by a subsidiary of Flowmaster? I have them on my Kirkham. Their schpiel (claim) is that they make more HP (i.e, less restrictive) and they're quieter. Thank you.

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