jewbacca

iTrader: (5)

I just finished swapping 4.10's into my car, and I wanted to see if anyone could double check my work on adjust the tune for the new speedo calibration. I found an Excell doc on the intertubes for calculating the values based on tire size (315/35/17's). It gave me vales for speedo scalar, speedo scalar fraction, and speedo scalar (scan tool). Are those the only 3 values I need to changes, or do I need to mess with the "time between pulses" valuie. I'm using tunerpro rt.

Catmaigne

iTrader: (6)

I've always just plugged in the 3 values from the excel file and have never had a problem.

96TransAmboosted

iTrader: (8)

^^^^^^ thats what i do as well and nless someone installed a guage overlay and did not have the needles recalibrated it should not be an issue