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      07-20-2011, 12:01 AM   #32
inagua
First Lieutenant
 
Drives: F13 M6, M3 e90, X5 35d
Join Date: Feb 2009
Location: Thousand Oaks, CA

Posts: 305
iTrader: (1)

exhaust

love the sound of the GTM cat back system but the HP gains of the full race system. Dont want to "tune" out the CEL.
Any idea of the HP gains with just the cat back system.
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