[wongakh]

I have been having the unstable rev problem and the recent software upgrade has ¡§almost¡¨ fixed the problem. However, it still exists! I have heard people from other forum with similar problem and suggesting to try to change to use other brand of fuel than your usual one, to see if it would improve the unstable rev problem.

So, what brand of fuel you are using for your MC/MCS? I am using Shell VPower.

Alan

[Jones]

This has been done many times sir. Try a search for "octane" or "optimax".

Jones

[adampoon]

Hello,Alan
I 'm also use the V-power, but cannot find any unstable rev.I think it is not related to the gas, cause ther are so many thing can cause the unstable rev, may be timing of spark plug. it is hard to shoot th problem.but anyway, let us see what happen on Sunday about your car.

Adam