Ah forgot about that setting

 

With the adjusted values in Torque app I hit 16 psi under full acceleration. Turbos are working fine, it's the engine sucking down fuel that is the problem. The Master Mechanic I know says if timing is off it will run rich hence eat fuel even when you're not on the gas hard.

 

hmmmmmm but the front O2 would tell the injectors to stop.

 

I can't recall but did you try disconnecting battery to see if computer will relearn?

 

No, but I will do that when I fill it up on gas tomorrow, thanks for the reminder.

 

My ecoboost is pretty much doing the same thing fuel milage wise. Was getting 18-19 on stock tires regularly. Put 33x12.50s on and dropped to 14. Went on a 1400 mile road trip and only managed 13-14mpg.

Cleaned air filter and checked plugs again and was back up to 16-16.5 for one tank. Pulled a boat to the lake and back (bout 600 miles) and got 11-12. New tank of gas now and only getting 13. I need to get the torque app and bluetooth adapter.

 

My mileage didn't drop because of tires. With 33" tires I've been averaging 14-15 mpg for over 40,000 miles. I take the truck in to get the timing chain replaced under warranty and I get the truck back and now driving it nice and easy I can't average more than 10-11 mpg. They screwed it up and now the local dealer won't fix it. We'll see what the Regional Service Manager has to say, been trading voicemails with her today.