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Minimaxx on and mileage still sucks..help
So I've hard my Minimaxx tuner for about 2 months now, and I am not seeing any better gas mileage outta my truck than I was with the the dpf on it, and I have been trying my *** off to get this thing to get some better mileage.
So I have the Minimaxx with the Hot Damn Tunes, run it on the hot setting, S&B intake, and doc/dpf delete on stock exhaust, fresh oil, and fuel filters.
I have noticed that if I flatten the pedal at about 40-50 and put a heavy load on the motor it will give me the low rail pressure every time. I have also seen to much fluctuation in fuel pressure code once while launching hard to do the tranny relearn, and I have noticed that if I get into the high boost, 40psi +, I'll see restriction on the intake restriction meter. Also the truck might be losing some coolant, but I can't tell for sure yet, any good way to check my heads??
I was seeing between 12-14 mpg before the dpf delete, and now even though the lie o meter says 22mpg hand calc is about 11-13.
Help me out any idea at what to look at or what might be going on??