Hi, this originally had Vanos code not operating inlet correctly, removed both VVT solenoids, cleaned oil gauzes, flushed, removed and cleaned gauzes again, now clean, fresh oil and filter, all working ok now and DTC did not return.

Lambda reading still around 0.94 to 0.96 at fast idle, 0.98 at idle - MOT emission reading.
Using Verus BMW Mini system the Lambda shows 0.98-0.99 but on EOBD it matches the gas emission reading of 0.94-0.96 and the STFT is between +2% to -3%, this does not make sense, I would expect to see say -20% surely?

Scoped the crank and both cam sensors to check for chain wear, all ok.
Have disconnected EVAP and plugged, no change.
Fuel pressure tested ok.
Have replaced front O2 sensor, was un-marked brand, for Bosch,and new plugs fitted, no change.

The car runs very smooth and drives fine.


If anyone has any ideas on this please I would be most grateful.

Thanks, Martin.