Flowmaster exhaust on 01' GMC Sierra
#11
im running this one here:
MagnaFlow 11379 - MagnaFlow Performance Mufflers - Overview - SummitRacing.com
deleted the cats and had em tuned out by Futral, sounds real rowdy and loud as **** but cruising at 70mph isnt too bad in the cab.
MagnaFlow 11379 - MagnaFlow Performance Mufflers - Overview - SummitRacing.com
deleted the cats and had em tuned out by Futral, sounds real rowdy and loud as **** but cruising at 70mph isnt too bad in the cab.
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