anyone have superchips for ford 7.3?

[CRXSiR]

I just picked up an 02 7.3 diesel..it has 37s on it and the speedo is off by about 5mph in the city and 10mph on the interstate..my speedo says im doing slower than what i really am..the truck has been programmed, and im assuming by superchips but not sure, and was wondering if anyone had 1 i could use to recalibrate the speedo to my tire size? any help would be great! thanks
Mike

[Patrick]

First off Superchips does not correct your speedo. If it could, it they had one they could only use it on their vehicle.

Speed Wizard is very easy to install and 100% accurate. Not only that, but if you buy bigger tires, it's very easy to adjust the speedo.

Speed Wizard Speedometer Correction

There is the link

[CRXSiR]

wow just saw this..lol..sorry..but thanks man..ever use this?? also they have a superchips programmer and it allows you to adjust your tire/gear ratio sizes and recalibrate it along with the power settings..called the cortex..