The two Ford dealers here are saying they can't do it for less than 10% out of adjustment. One said it cannot just be flashed/adjusted. Maybe they just don't want to under warranty and will do it if I paid?

Will it also fix the odometer issue?

 

I would just go ahead and purchase either the SCT or the Preditor turner, I had Brenspeed do mine, they had to program it to the specific octane to your state. When I put the tuner on mine it woke the car right up, cost about $300.00, rather than spending another $300.00 for a CAI (Cold Air Induction) I purhcased a cone filter from auto zone and conected it using about a 12" length of 3" ABS black pipe. Between the CAI and Tuner the performance enhancment will be well worth the investment, and then you can program you tuner for revs per mile, if you mention the revs per mile to Brent and Brenspeed he would probably program it in for you.