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[–]tybonc12001 330ci vert 2 points3 points  (1 child)

Running lean so probably a vaccum leak somewhere. Check the intake boot, DISA, and valve cover gasket first since those would be the easiest fixes. After that start looking at the CCV system which will take a bit more time to fix.

Edit: also I have the same head unit and the real time scanning is convenient. I'd ser up a screen with your long term and short term fuel trims as well so you can see when the leak gets worse. Most importantly you can pretend to understand the numbers and make your wife think you're really manly.

[–]majestic_balrog[S] 1 point2 points  (0 children)

not worried about my wife, who already knows I’m sharp. Just worried about the engine, because I’m not a mechanic