Mine bumps 38-39 in mileage and tow:40-41 in drive, race, and extreme. Hits about 43-44 in the HOT setting. This is breathing through the stock airbox with stock replacement filter, so I'm guessing it'll be a touch higher once I get some type of intake on it. I wouldn't be worried about it.
Normal , i have seen the same untl i got mine boost elbow, which your newer trucks dont need, but whatch your stock turbo are only efficient, to 40 psi then all youu are doing is making very hot air,
and 50psi you can take out your head gasket. have fun.
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