[bossman15]

Did a little test on the interstate today. Cruise control at 70 for 55 miles to madison florida from tallahassee. Averaged 15.2 with my trucks stock tune. On the way back I had the tow tune with 87. Averaged 14 even at the same speed. I don't get it. It seemed like it was running higher revs with the gryphons tunes ( tried 87 tranny for a bit too). Anybody else experience this? I have a brute force cai and a super 44 catback