Quote:
Originally Posted by xcelir8bmw
Test Drive here...
It happens on every hard shift when accelerating.
I hear the same thing with empty trunk and validating all is tight here...
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You’re not referring to the “blap” sound from the exhaust, are you?
What I’m hearing is directly related to bumps in the road, and is really only noticeable at lower speeds. While I first noticed it as the occasional hollow thump or knock at maybe 25-35 MPH, I’ve found it’s most noticeable at say 10 MPH on surface streets that are well paved, yet bumpy. Yesterday I really noticed this with the seats folded down and my music off.
Again, you have to be careful not to confuse any of the exhaust burble sounds for anything abnormal.