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gmenfan75 · 08-21-2009, 08:15 AM

Got my L99 back yesterday with gmpp exhaust (without tips), it is definitely louder. Has a great growl with little increase in noise in the cabin. I paid $800 installed.

08-21-2009, 08:15 AM	#17
gmenfan75 Drives: 2010 IBM 2SS L99 Join Date: Jul 2009 Location: Chesapeake, VA Posts: 6 View My Garage	Got my L99 back yesterday with gmpp exhaust (without tips), it is definitely louder. Has a great growl with little increase in noise in the cabin. I paid $800 installed.