Help with PowerCommander 3 USB
 

I recently bought a 2001 CBR 929 and the previous owner has it setup with a Power Commander. Im ASSUMING he has it mapped out to what is setup on the bike.

Which would be

Full Hindle Exhaust
K&N Air Filter

Now i dont know if he tweaked that map at all or what. But i did notice my mileage being terrible. I fill up the 4.75gal tank and i get 70-80 miles before my fuel light comes on. I can only assume this isnt normal just based from reading guys with the same bike, although without the pc3, getting almost 200 miles before the light. Now heres where my question comes in.

Whats the easiest way to increase my fuel economy? Im guessing if i unplug the power commander, the bike will run on stock settings? I dont know much about tinkering with a pc3, but i noticed on the box itsself theres a Fuel indicator with - and + levels, can i just adjust that and it will give better mileage? Im just not trying to make anything worse.