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F30 / F31 / F32 / F33 / F34 / F36 (2012 - current)
The sixth generation BMW 3 Series Sedan F30/F31/F34 and the first first generation 4 Series Coupe F32/F33/F36. Get the latest 3 and 4 series pricing from our ordering and pricing guide sticky thread.

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Old 04-20-2017, 07:52 AM
ifoney ifoney is offline
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Location: California
Join Date: Feb 2014
Posts: 413
Mein Auto: 335i
M Performance Exhaust - Improper Install

I had my dealership install MPPK and MPE on my 2014 335i earlier this month. Post install, one of the exhaust tips was about half inch longer than the other when you looked at it from the back of the car - this made one of the exhausts look bigger than the other. I also noticed that on shifts while on full throttle or hard acceleration, there was a vibration under the car along with the burble.

I went back to the dealer and asked them to fix the exhaust tip and take a look under the car if the exhaust was properly installed - sure enough, they found that the exhaust has a "manufacturing issue" and they replaced it with a new exhaust.

The tips are properly aligned now, but how can I verify if the clamp was properly installed? How can I tell a proper install from a improper one?

I certainly notice that the vibration from under the car is reduced and does not make a gassy noise with the burble now. Still need to break in the new exhaust though.
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Old 04-20-2017, 08:00 AM
Rusty34's Avatar
Rusty34 Rusty34 is online now
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Location: Charlotte, NC
Join Date: Feb 2017
Posts: 420
Mein Auto: 2016 550i M-Sport~2015 X1
Can you take pictures of the install and post them here?
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