How, where and how much? I'm in East Central VA and have a modified truck that needs a tune.

The V10 has shorty headers, high flow cat, flowmaster 3" cat-back.

Truck is lifted 4", has 35" nittos and 4.88 gears with a 4r100 trans.

What's included in this update?

My truck is a '99 F350 with the V10 and 4r100 auto trans. I have a high flow cat, headers, a flowmaster cat-back and a CAI. What adjustments should I make to the tunes? MAF scaling? What would I be looking for?

Sorry bro, you bought a useless tuner. Diablosport is proving to be more and more useless every day.

I do, how much you willing to give for it?

You don't want to remove that speed limiter as your two piece rear driveshaft isn't balanced past 90mph. It can whip if you go much faster than that and break.

You cant adjust the speedo with ANY tuner on these vehciles. Super duty speedo calibration is handled by the ABS module. Your gear swap won't affect the speedo calibration as the tone ring is bolted the the ring gear. Your tire size will affect it and you can actually get that calibrated at a ford ...