Dears,
E60 M5 2008 year.
Last week I get error check engine and reduce power. I checked with ISTA and see that DME: VANOS exhaust 2 . With ISTA I did vanos ventilation but not effect I can't cleared error. Then I replace exhaust 2 solenoid with used. Then error is disappeared.
After this I again did vanos ventilation procedure. The result is attached. all 4 bank is NOT OK.

engine performance is OK, When vanos ventilation process , when ista automatically increasing gas, engine is interrapting. Also I fell when I release accelerator then from exhaust 6-10 cylinder i hear interruption . Servise said that do vanos ventiolation till OK

Please advise what I will do

 

you might want to post this on M5board.com, you'll likely get a lot more responses there. Good luck.

 

Go on ebay vanos solenoids, tune up, oil change, spark plugs, check your engine plug under the top cover for oil