We built a 67 post dart AWB for Bob Reams here in AZ... he runs a Fast EZ controller on stacks and he gets 27mpg... and thats on a 11 second 6.1 hemi... at cruize you can be up to 15.5 as there is very little load... for most everywhere you need to be at least 14.3:1... WOT and high load area's should be around 13:1...
