Hi just purchased 2006 e83 2.0 manual diesel....
Had to get rid of my 02 x5 ....head turbo gone....220k miles..

The x3 has 80kon clock....first proper.run in it today and finding that between
2 to 3 k rpm there is a physical jolt.....and engine management light has come on.

There is no smoke and.gear changes are smooth...

I know codes will need to be read but wondering if any suggestions as to likely cause....turbo, injectors etc.....

Cheers

Gary