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Old 07-01-2012, 11:11 PM   #6
Tha Butcha
1st Gear Newbie
Join Date: Jul 2012
Location: Toronto
Posts: 2
Thanks for the replies and advice.

I just figured out that the car has an upgraded exhaust aswell.
I'm thinking those switches underneath the steering column is for cutouts on the exhaust

I know that there is an aftermarket exhaust for the 300 with cuts-outs to increase the volume of the sound.

Is there something similar available for e60s M5s?
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