I would guess that if I pully up a size or two my car could possibly get better gas milage. Does anyone know this to be 100% true? (purchased my car with a small pully on it) Not lookin for "my buddy" stories, just first hand knowledge.

So if you have pullied down and lost gas milage that info would work just as well. How much did it change and how many pully sizes did you jump?

Thanks,