Thread: Muffler replacement huge horsepower gains!
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Old 03-31-2009, 09:37 PM
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RodKnock RodKnock is offline
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Cobra Make, Engine: KMP 539, a Ton of Aluminum
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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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