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Super 40 or american thunder?

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Old Jun 3, 2007 | 11:09 PM
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B.Payne44's Avatar
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From: Hueytown, AL
Super 40 or american thunder?
Wuts louder and better Flowmasters super 40 or 40 series american thunder muffler? (already have Flowmasters Force II Daul side exit system)


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Last edited by B.Payne44; Jun 3, 2007 at 11:15 PM.
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Old Jun 6, 2007 | 12:35 AM
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ws6_guyscrew's Avatar
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Origional 40 is the loudest, followed by the Super 44 which is a loud & deep muffler, and the Super 40 is pretty much just the deep toned sounding muffler.
 
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