[vasillalov]

Folks,

I keep reading here constantly about turbo waste gate chatter, noises and generally problems with the waste gates. My understanding is that the problem is so common that BMW has released a new software in attempt to fix this.

Having never owned a car with a turbo charged engine, but being highly technical, how do I recognize waste chatter? Is there a test I can do to attempt to potentially reproduce this problem?

I own 2008 BMW 335i and the car just hit 7000 miles on the odometer. I believe that I am running the original factory software version since the car has been to a dealer only once so far for regular service.

Thanks for your help and suggestions in advance!

[5soko]

Rev it in neutral to about 3-4k rpm and when the revs are coming down listen for chatter.

Then you can drive in first gear or second, move to about 3-4k rpm and released the gas and again listen for the chatter.

[vasillalov]

Thanks, I will give that a try tonight.