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Technical Topics Mechanical Maintenance and TSBs: Break-in / Oil & Fluids / Servicing / TSBs and Service Bulletin B58 m340i exhaust bubbling

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      10-08-2024, 12:53 PM   #1
shez1234
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B58 m340i exhaust bubbling

Hey guys,

Recently noticed a new bubbling noise coming from my m340i exhaust. Once engine is up to temperature it pretty much goes away. It’s different to normal exhaust sound and it’s not on sport setting.

Sounds like low pitch bubble popping from the exhaust. Any ideas?
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      10-08-2024, 02:25 PM   #2
AM340iMiami
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People pay good money for those sounds.
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      10-08-2024, 04:25 PM   #3
shez1234
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Quote:
Originally Posted by AM340iMiami View Post
People pay good money for those sounds.
Yeah it’s sounds alright, except I’m more bothered about if it is the head gasket or just an exhaust condensation thing
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