Ammendum to post earlier this am.

Had the truck on the road for 5 hours today. Am now experiencing vibration that can be felt all over the front end of the truck--extends to brake, cluth and gas pedals, also floorboard. I have a bad feeling. I live on top of a mountain in southwest Virgina. Air ...

This is an XLT model and does not have an onboard info center. MPG is calculated through odometer. I have now re-installed original factory tune and will recheck consumption.

Have never once had to add oil between regular oil changes. Have now added oil once weekly since installed predator tune ...

Vehicle is equiped with new air intake and 5" monster exhaust.

1) Diablosport 60 hp economy tune has reduced fuel economy by 2 miles per gallon. Am pleased with the additional horsepower and torque but do not understand reduction of 17 mpg to 15mpg.
2) Engine is now burning oil which has never ...