Buy opening up the intake and exhaust you've allowed the engine to move more air. More air + the same amount of fuel = a hot, lean running engine. So fuel has to be added to the mix to even things out. Also, the added power you're getting from your upgrades just might have you twisting the throttle more and you're unaware that you're doing it.
yeah...I do think the added power has something to do with it....I get on it a lot more than I used too....just because its fun!
Yep I heard that, the mileage on my scooter does great out on the highway.
Now you start head up them hills and running around the city it drops. Sure is fun twisting that throttle a time are too!