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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > B58 Turbo Engine / Drivetrain / Exhaust Modifications > B58 blowing air 2nd gear
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      01-31-2024, 03:23 PM   #1
Eraaz
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B58 blowing air 2nd gear

Hello guys,

I just installed MHD stage 1 OTS E85, on my M140i equipped with the B58
I just have an HPFP HDP6 and I'm in full E85.
Since the tuning when i full throttle in second gear, I have a noise that comes from the back that looks like "stutututu"
This one is only present in the second gear, in third but less noticable.
Here is a video where you can hear the noise as soon as I accelerate
https://youtube.com/shorts/S1746v65j...1Imi-KWeAg1cZ8

Have you ever seen this?
Thank you.
Appreciate 0
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