On my N54 335i I have had a stumble on warm start that hasn't thrown any codes at all, just to try it I pulled both vanos out and gave them a good working over with brake cleaner today.. Warm stumble gone and my throttle response seems to also be improved quite a bit. Best 10 minutes I have spent on the car in quite a while. BTW, car is sitting at 160k miles with original vanos.
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2009 118i Monaco Blue "Maximillion"
2009 335i Saphire Black M Sport "Leopold" Cobb stage 2 aggressive tune, Mishimoto FMIC, Cobb charge pipe, Cobb catted down pipes, Forge diverter valves, BMS inlets and DCI, Cyba scoops and M Individual Audio retrofit and M3 gauge cluster retrofit.
2011 328i Titan Silver M Sport "Franzel" <--Wife's car
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