Jim, I left Wed after work around 4pm and drove straight through to Missouri, approx. 10.5 hours, I was checkin out my paint job. I drove between 70-79 mph, with a few bursts to 97 (rev limiter) to blow it out, and used the cruise as much as possible, I averaged 17.1. I left 2pm Thursday drove through a snow storm and did the trip in 9.5 hours, all down hill and got 18.6 mph. I also have the Attitude, set it on level 3 which is 80hp.
Around town, stop n go I get 12.9 stock, with the Attitude only about .5-1 additional mpg, its more noticable on the freeway. I also have a Turbo back Duall DPPI system and a Proguard 7 air filter, all these mods also help mpg, Hope this helps you. Jeff