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-   -   Exhaust Popping on Deceleration (https://xoutpost.com/bmw-sav-forums/x-m-forum/83747-exhaust-popping-deceleration.html)

dhyrk3 10-03-2011 01:00 AM

Quote:

Originally Posted by papasmurf (Post 845660)
Yes, that's simply a bit of unburnt gas igniting in the cats. Stop over-thinking things, it's a great sound.

:iagree: music to my ears !

998M 10-03-2011 04:25 PM

Quote:

Originally Posted by dhyrk3 (Post 845712)
:iagree: music to my ears !

+1 I love it.

NOVAwhiteX5M 10-15-2011 11:51 AM

this is actually an 'enhancement' on the e90/e89's with the performance package

Developed in-house by BMW's engineering department, ..... and add an exhaust "burble" during engine overrun.


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