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Tr6 · 04-04-2016, 05:13 PM

Makes me wonder if the stock exhaust system is a full 2.5 diameter instead of the 2.75 NPP from primary cats back (which would add more sound to it and sound a bit different due to the muffler setup). I figured this system would sound louder than the NPP and still not have any drone. GM wouldn't have sanctioned it if it had drone to begin with though so I didn't expect any but it not sounding as loud as NPP is VERY interesting!

04-04-2016, 05:13 PM	#23
Tr6 The Dogfather Drives: #1 off the line for a customer. '16 Join Date: Oct 2015 Location: Andover, KS Posts: 2,621	Makes me wonder if the stock exhaust system is a full 2.5 diameter instead of the 2.75 NPP from primary cats back (which would add more sound to it and sound a bit different due to the muffler setup). I figured this system would sound louder than the NPP and still not have any drone. GM wouldn't have sanctioned it if it had drone to begin with though so I didn't expect any but it not sounding as loud as NPP is VERY interesting! __________________ 2SS, Garnet Red with Adrenalin red, NPP, MRC M6 coupe #33 off the line #1 order for Customer. Build thread HERE! Story of my delivery HERE!