If you don't like to popping just give it 'some' throttle while decelerating. Your mech should check your idle CO% too. IIRC 3% is about as nice as it gets but if you're after economy then 1.5% should do better but you loose some smoothness on getting on the throttle.
I have an adjustable WUR and I have dialed my part throttle for 14.5-15 AFR and it does not seem to be very hungry for gas (I have never measured consumption though). WOT is below 12 for longevity. Idle about 13.7-14 AFR.
|