Quote:
Originally Posted by m34m
This is probably covered in the eight pages of this thread but I'll ask anyway. Is the stock exhaust a flap/valve exhaust? If not how does it achieve its changes in sound in the different drive modes? Also how does an MPE factor into all of this being a flap style exhaust? If one has an MPE what would be the loudest configuration Sport+ and Track Mode (exhaust)? Or would it be this "hidden" mode i.e. Comfort + MDM (Traction) plus Track Mode (Exhaust)? All this configuring has me confused and doesn't exactly line up with the M2's reputation of being a more analog back to basics machine.
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You can see all exhaust modes in technical training manual pdf, downloadable in the sticky documents thread of M2 discussion.
The OEM exhaust has flaps.
AFAIK you have 3 different settings regarding those flaps/noise:
-sport/sport + = loud, some pops and gurglea
-comfort = more quiet; almost no pops and gurgles
-traction mode = loud with exaggerated pops if DCT is in sequential mode
Traction mode in D sounds like comfort.
Traction is a mode by itself - you can access it pressing once DSC, whether you are in comfort or sport mode. It is a mode by itself with similar settings to confort in steering, accelerator response, etc. All details in the pdf of technical training.