- Easy 4-wire Installation
- No PCM Reprogramming
- Corrects Speedometer for Accuracy
- Fits 1994-2010 Mustangs (See Fitment Section)
If you've changed the tire size or gear ratio of your SN95, New Edge or S197 Mustang, your speedometer needs to be recalibrated. This Ford Performance Speed-Dial Speedometer Recalibration Tool is just what you need!
This tool allows you to easily recalibrate the speedometer by scaling a frequency based on the vehicle speed signal up or down to maintain accurate vehicle speed indication to the instrument cluster and PCM. Best of all, it means you're saved the trouble of PCM tuning.
Note: To maintain cruise control function on 2005-2010 Mustang automatic and manual transmissions, gear change is limited to the equivalent of 5% higher or lower ratio (<+/-5% change). For example, a gear change from 3.55 to 3.73 results in a gear ratio reduction of 4.8% so cruise control will continue to operate normally. A gear ratio change from 3.55 to 4.11 results in a gear ratio reduction of 13.6% so cruise control operation is lost.