as to the MPG, i just got 20MPG on the last tank, which was mainly city commuting. my best highway is 26.5, and that was at 75 with the windows down. ive got a big-valved head with a BoPort 2,1 kit, T3, 3" DP to dual 2.5" exhaust, Large NPR and VAM. i have serious drivability issues with my...