Glad I live in Tidewater Va. 93 Octane is avaeraging about $1.79.9 here. I just topped off and with the new chip I got 24.221 mpg with my normal driving routine (mix 60% Interstate 40% city) except maybe a little more sticking my foot in it to feel the new power. I was getting right @ 23 mpg. I'm very pleased. Next thing is to take a long ride somewhere on the interstate so I can see what the new hwy mpg is. It was just over 27 mpg.