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      01-02-2019, 07:45 PM   #3
Mach550
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Drives: 2019 M550i
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2019 BMW M550i  [8.00]
Quote:
Originally Posted by drjolokia View Post
I've done a lot of research on this. I've talked with a BMW service Foreman and no one can seem to tell me why but installing a rear diffuser disables the kick trunk function.

This is true for the bmw m Performance diffuser and other 3rd party diffusers.

All I can find out is that it happens but not why it how to prevent it from happening.

That's why I decided to wrap the gray part of the rear bumper instead of installing a diffuser. It looks really good (not quite as good as a nice diffuser) and the kick trunk function works.
Only thing I can think of is maybe the way the cables were wrapped behind the oem diffuser was specific to its operation...I'm going to see about playing with it this weekend.
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