Has anyone found an acceptable tuner for an '06 F350 with a 6.8 V10? I've found a couple that allude to the fact that they make one but don't have all of the parameters. I'm looking for one that will give me a mile or so per gallon and firm up the shifts. My guess is that the 'fly by wire' has 'em stymied, at least for the present and they would rather concentrate on the money maker diesels.