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      01-26-2018, 08:34 AM   #3
550ihtown
Private First Class
United_States
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Drives: 550i 2014
Join Date: Jul 2017
Location: Mobile Alabama

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Garage List
2008 M3 E93  [0.00]
2022 BMW X7 M50i  [0.00]
Quote:
Originally Posted by yco View Post
if you can film it can be %100 but from the way you describe its dump valve sound so dealer is right its coming from turbo charger.. i dont know the stock turbo pressure on your 550i but since its V8 and upgraded version of that engine with higher boost is being used in M cars its probably lower than 35i's you re driving now.. when the turbo pressure gets higher that sound you re describing increases.. if its something like on the video.. no worries..

Similar to that sound. Thanks!
Appreciate 0