[Kreuger_]

Delete

[Bimmer_Engineer]

Without codes it could be pretty much anything...for instance it could be that the anterior flux eductor is out of calibration...

[apexit4]

It could be any number of issues: vacuum leak, carbon build up, clogged DPF, failing HPFP. Get access to a code scanner and report back with the codes to get more feedback.

Also, consider posting this in the diesel sub-forum section. I dont think a lot of those guys frequent the general E9X section you posted in. You can find the diesel sub-forum here: https://www.e90post.com/forums/forumdisplay.php?f=377

[lnxguy]

Single VNT in the 330d no? Might be a sticky VNT vane issue leading to over boost. Restarting the car will fix it.

[Mayorie]

Originally Posted by apexit4

It could be any number of issues: vacuum leak, carbon build up, clogged DPF, failing HPFP. Get access to a code scanner and report back with the codes to get more feedback.

Also, consider posting this in the diesel sub-forum section. I dont think a lot of those guys frequent the general E9X section you posted in. You can find the diesel sub-forum here: https://www.e90post.com/forums/forumdisplay.php?f=377

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