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      05-07-2022, 03:05 PM   #1
yeah_knee
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Exhaust flap rattle???

So I'm getting an exhaust flap rattle on cold starts and slow takes off. It starts to fade as the car goes faster.

On SPORT PLUS mode, there's no rattle whatsoever (flaps open obviously)

Any one else have this happen to them? What's the solution?
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      05-07-2022, 07:00 PM   #2
viktorhanacek
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Check for exhaust fixing bow/clip, maybe it's worn out and you need to make it wider again (by your hands) or purchase a new one.
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      05-08-2022, 05:03 AM   #3
X5M_RoOkIE
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Quote:
Originally Posted by yeah_knee View Post
So I'm getting an exhaust flap rattle on cold starts and slow takes off. It starts to fade as the car goes faster.

On SPORT PLUS mode, there's no rattle whatsoever (flaps open obviously)

Any one else have this happen to them? What's the solution?
is your car tuned? what exhaust u have?
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      05-08-2022, 01:16 PM   #4
yeah_knee
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Quote:
Originally Posted by viktorhanacek View Post
Check for exhaust fixing bow/clip, maybe it's worn out and you need to make it wider again (by your hands) or purchase a new one.
Ok cool
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      05-08-2022, 01:17 PM   #5
yeah_knee
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Quote:
Originally Posted by X5M_RoOkIE View Post
Quote:
Originally Posted by yeah_knee View Post
So I'm getting an exhaust flap rattle on cold starts and slow takes off. It starts to fade as the car goes faster.

On SPORT PLUS mode, there's no rattle whatsoever (flaps open obviously)

Any one else have this happen to them? What's the solution?
is your car tuned? what exhaust u have?
Stock exhaust - and yes tuned with bootmod3
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      05-08-2022, 08:56 PM   #6
SLOWER
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Quote:
Originally Posted by viktorhanacek View Post
Check for exhaust fixing bow/clip, maybe it's worn out and you need to make it wider again (by your hands) or purchase a new one.
Could you explain this or do you have a picture? I definitely have this same issue.
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      05-09-2022, 12:40 AM   #7
viktorhanacek
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Go to YouTube and search for "bmw fixing bow".
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      05-09-2022, 02:55 AM   #8
X5M_RoOkIE
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Quote:
Originally Posted by yeah_knee View Post
Stock exhaust - and yes tuned with bootmod3
I had this problem when it was first tuned. Are you on Stage 1? Stage 2 was better for me and it stopped most of the noise.
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      05-09-2022, 11:31 AM   #9
yeah_knee
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Quote:
Originally Posted by X5M_RoOkIE View Post
Quote:
Originally Posted by yeah_knee View Post
Stock exhaust - and yes tuned with bootmod3
I had this problem when it was first tuned. Are you on Stage 1? Stage 2 was better for me and it stopped most of the noise.
I'm on stage 1
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