Hi, I hope I get some help.
I have a 2012 RAM 2500 full delete with an MM3 tuner & a Pusher air intake & an Air dog fuel pump 5" exhaust.
The truck only has 42000 on it, and I only got 11 to 12 mpg, and I bought it.
Is it too much fuel up to the CP3 fuel pressure, around 10 psi?
Should I back down to 4 to 5 psi?
The truck runs fine, but I get bad fuel mileage.
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