How to calibrate the speedometer?
I'm seriously considering upsizing my tires by about 1" diameter, from 33" to 34". I would like to fix the speedo and shift points to accommodate the new size with as little expense and trouble as po...
Forum Discussion
I would definitely use a GPS to see what your actual speed is vs the speedo before buying a tuner just to adjust the speedo reading. As was said, you may find that it is right on or within a mph or so.
