Thinking about buying Sct

[zachzinda]

I am thinking about buying the Sct tuner. I have a 06 f-250 with cold air intake and 4' exhaust no cat. Does it let you adjust the speedo for larger tires. I just want better mileage and better shifting. Also do the custom tunes cost extra or are the canned ones good enough for what i want.

Thanks Zach

[f250ford]

the sct is great for better mileage (if you can keep your foot out of it), and better shifting but it does not allow for speedo adjustment for larger tires. I would contact one of the vendors on this site for your sct needs. Usually when you purchase the SCT you get 3 custom tunes for it. As far as the speedo calibration goes I would go with the speed wizard from here Speed Wizard Speedometer Correction it is the best product out there for calibration.

[CCSBD]

I thought you could but had to enter it like by tire revs? I could be wrong

[f250ford]

you can enter the revolutions per mile but that does nothing for the speedo it is for the tranny from what I have seen on mine

[glennpagano444]

Does this mean when I get bigger tires I would have to change my revs/mile on my sct tuner?