I changed my tire size to the measured inches and my speedo has changed from 3 mph over to around 1 over.
Mikel - can you answer both of the other questions I asked. Thanks

In order to correct speedometer - should I be using tire size or height (32 inches)? I just added cold air intake and 4" exhaust (no cat) , should I see better fuel mileage? With these changes should I update my predator or stay with the old?