I hate to ask this again, but i lost the link, and wasnt sure what everyone else had said about which speedometer recalibrator was the best, cheapest, and easiest to use..

i dont need to order it until late this week, but i would like to know ahead of time which ones you others have experiance with...

i have a 99GT, and im getting FRPP 4.10's in next weekend, im gonna order the motive rearend rebuild from mustangtuning at the same time, so whenever i know, i can go ahead and do that...

but like i said, which is the best, and most accurate,, i dont really know how they work, so any advice would help,,thanks guys

 

i have the dallas mustang speedo calibrator. its accurate to within about 5 mph or so. i am not sure if the dip-switches are set wrong or not. I didnt install it. it was done before i bought the car. but i was re-searching it, and it looks like there are about 5 to 7 dip-switches that are set in one of two positions in certain combinations to give the desired result. they have a chart that will give you the settings based on your gear ratio and tire/wheel size.
-kevin