Hi,
Was at the meetup 2day and asked a few people (incl E90 drivers) if they encoutered the same problem, but no luck. What happen is that the RPM needle was not stable, moving up and down (+_ 100 rpm) when in idle mode, with and without aircon. When I am stationary in 'D' mode, the needle would move up and down as well. However, I did not feel the any chanages of engine performance, vibrations or noise.
Spoke to PML on the phone - he's not sure what is the cause so I guess I have to leave the car at the workshop again. In talking to BVO during an oil change, he suspect that its the V-Power that may have cause problems for the engine - too dry. BVO suggest that I switch to normal 98 octane petrol and monitor for a few tanks before taking next action.
Car still stock - was thinking of volt stab and KNN filters but guess I will wait till this issue is sorted out first. Anyone has similar problems, experience or advise to share?
Was at the meetup 2day and asked a few people (incl E90 drivers) if they encoutered the same problem, but no luck. What happen is that the RPM needle was not stable, moving up and down (+_ 100 rpm) when in idle mode, with and without aircon. When I am stationary in 'D' mode, the needle would move up and down as well. However, I did not feel the any chanages of engine performance, vibrations or noise.
Spoke to PML on the phone - he's not sure what is the cause so I guess I have to leave the car at the workshop again. In talking to BVO during an oil change, he suspect that its the V-Power that may have cause problems for the engine - too dry. BVO suggest that I switch to normal 98 octane petrol and monitor for a few tanks before taking next action.
Car still stock - was thinking of volt stab and KNN filters but guess I will wait till this issue is sorted out first. Anyone has similar problems, experience or advise to share?