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BMW 3-Series (E90 E92) Forum
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Wastegates?
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| 07-03-2012, 10:58 AM | #1 |
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Captain
 
63
Rep 788
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Wastegates?
On cold starts I notice a vibrating metallic type of sound when I let off throttle.
I have also noticed that for a while now the wastegates seem to close and the exhaust gets louder just like when I run map8 (no turbo mode). This is when that rattle sound starts. It lasts about 5 min then everything back to normal. Any thoughts?
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