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Old Nov 10, 2014 | 03:31 PM
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harvey blum's Avatar
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Default rxhaust
any way to make npp louder than when open. harvey
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Old Nov 10, 2014 | 07:00 PM
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Headers will make it louder.

Install cutouts to bypass the mufflers.
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Old Nov 10, 2014 | 07:54 PM
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Originally Posted by RicK T
Headers will make it louder.

Install cutouts to bypass the mufflers.
Remove the cats.
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Old Nov 10, 2014 | 07:58 PM
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As the others have posted. Look up Z06 muffler mod. This can be done on the NPP as well.
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