[keithmac]

A bigger jet may cause the car to bog if you keep the same mix, more methanol would cure this but then you`d run richer as it acts as a fuel so the power may drop off.

To be honest it sounds like you`ve got the best setup at the moment. If the man that maps your car isn`t prepared to exploit the benifits of WI when it`s being mapped then there`s not much you can do about that.

The power really comes from leaning out the mixture and advancing the igntion past what would normally be possible on straight petrol. At the moment you`ve got WI as a safeguard against knock on an already safe tune.