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      01-27-2013, 11:56 AM   #3
Jumping Jack Flash
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Drives: 2011 335d
Join Date: Nov 2012
Location: California (east of Sacramento)

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Originally Posted by Julesandtrish View Post
..... I must say that every time the ERG comes on to burn the NOX gasses while I'm driving the exhaust sounds much more noticeably louder.....
OK, just so you won't feel all alone. But this won't answer your question. Honestly I have never experienced/noticed anything with respect to the quoted item above. How would I even know this was happening? I have close to 10K miles on the odometer. Once in a while it gets a bit noisy when I have come back home and parked it in the garage and turned off the engine.
Quaife LSD w/VAC finned diff cover, M3 Rear SF Bushings, M3 sways & M3 OEM Susp Front/Rear Cmpnt Kits ('cept strut brace), GC Caster/Camber Plates, AC Schnitzer M3 Sport Springs, JRZ RS1 dampers, JBD 100%, Goodrich SS brake lines, non-stggrd APEX ARC-8 18" wheels with Nitto Motivo tires (winter OEM 17" wheels and Blizzak LM-25).