Waiting for my white IE to be dropped at my house. Does any one know if the new computer gets its wheel speed from the ABS sensors or is it from the transmission? On my viper it reads of the ABS which if you change the gears there is no computer calibration needed. I see on the 08 Challenger that you have to recalibrate the computer with a gear change. I would like to change the gears on my auto to 355 but with no tuning capabilities as of yet that may not be an option if the car does not get speed reading from the ABS sensor. Thanks for any information.