Originally Posted by ElSombreroNegro
If i may interject my two cents.... The stock kegger is one reason this thing is so bad on gas. The super long runners do their job too good at idle and low RPM. They let in too much air and therefore too much fuel, by artificially skewing the torque range way too low and sucking down that extra gas in lower RPMs. you do see a difference in mileage when you get rid of the kegger. also the more efficient timing of the performance tune does not hurt.
Absolutely makes sense. Thanks for that man, didn't know that. The reviews on Hughes for the Air Gap bragged about the increased mileage.