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hmf torque range modifier?

CreepinDEEP2010-08-11 03:13:12 +0000 #1
Anyone ever use one? Are they worth it? Do they work? Do they make the exhaust quieter? Any positive or negative about it? Just curious?
bruterider272010-08-11 03:21:38 +0000 #2
A what?
bigblackrancher2010-08-11 03:49:12 +0000 #3
heres what hes talking about hmfracing.com/shop/p...torque-range-modifer and it says it doesnt quiten the exhaust



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