Speedometer Calibration

[ShakerTransAm]

Well i just ordered a set of 3.90 gears for my 95 formula M6 and i'm sure my speedo will be off when I install them. Is there any simple tuning setup I can get for my laptop to calibrate the speedo for these gears? Or any other way to do it myself? I realize that it is probably not too expensive to have a tuner do it, but I like to tinker with things and if there is a safe way to do it myself i wouldn't mind trying to figure it out. Also, I have use of a snap-on modis scan tool at work, i sort of doubt it, but maybe there is a way to do it on that? Any advice is appreciated.

Thanks,
Tyler

[ShakerTransAm]

ok so i downloaded tunerpro rt and played around with it for a while. can anyone send me a stock bin file for my 95 formula M6? I want to see if i can figure this out. Also any advice on how to alter that bin file for the speedometer calibration using tunerpro would be great. Thanks

[meissen]

http://meissenation.com/datamaster/tunerpro/