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BMW 3-Series (E90 E92) Forum
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335i weird noise help
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04-13-2014, 05:32 PM | #1 |
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335i weird noise help
My 335i is a 2007 with almost 100k on the clock.
When cobb tune is active, under heavy acceleration the car will produce a loud squealing like sound from what appears to be the front right of the engine bay. When the car has no tune it produces no foul noise. Im attaching a bunch of logs that hopefully people that know much more than I can look at and find the problem logs 1-3 are stock tune for a control test logs 4-6 are done on the stage 1 lt sport tune logs 7-9 are done on stage 1 st sport All variables such as road, weather, oil temp are constant. Thanks for any help ! |
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