[RarlyL8]

I'm late to the show but can add that I agree with what others are suggesting.
A fuel tuned 930 can achieve 15mpg city/21+mpg highway. I do this mod all the time.
Popping on decel is enhanced by a non-functioning decel valve. Push in the clutch and it instantly goes away. Same for light throttle.
Loud mufflers have no baring on fuel mileage and expose all the noises hidden by the stock unit.
Never heard of a Kool Vue but that's what you get when the decel valve is disabled and fire shoots out your tailpipe!