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      04-28-2019, 12:29 PM   #44
ksoze
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Drives: 2018 M550iX
Join Date: Nov 2010
Location: Maryland

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Quote:
Originally Posted by BardG View Post
Thank you. Two questions:

1. How do I know if the flaps are fully open? (Just by the sound?)

2. Should I do this on a fully cold start?
1 . After the cold catalytic warm up on start up, see if the exhaust is coming from both sides. The sound will literally and figuratively be twice as loud when driving or under throttle, IN ANY DRIVING MODE.

2. The car has to be put in Sport Mode, then while still running, get out of the car and pull the fuse.
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2018 M550iX-Dinan Stage 1 | 2011 E93 M3 Convertible | 2002 E46 M3 Convertible | 2002 E53 X5 3.0 | 2000 E39 540i | 1998 E36 M3 | 1988 E28 M5 | 1987 E28 528i
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