The 6R140 automatic transmission on the 2011 – 2018 6.7L Powerstroke has what is called Adaptive Memory and is constantly learning and adapting to different horsepower levels, temperatures, driving habits, etc. If you selected to tune the transmission during the Install Download process, the Transmission Adaptive Memory is automatically reset when the download completes. We highly recommend performing a Transmission Relearn procedure after installing transmission tuning to help the transmission perform correctly with the added horsepower.
The 6R140 automatic transmission will eventually learn over time on its own, but the relearn procedure gives a good baseline for the adaptive learning and helps to speed up the learning process. To perform the relearn procedure, please follow these instructions:
After tuning is installed, perform each of the following 0-80 MPH runs while in the HOT power level. During this relearn process, you may experience hesitation during shifts, hard shifts, or defuel patterns, all of which are normal:
The Transmission Relearn procedure is complete.
When re-training the transmission, ALWAYS follow posted speed limits. Do NOT attempt runs in adverse weather conditions such as snow, ice, rain, wind, or any other conditions that may affect your vehicle's traction or impair your visibility!
Note: On any vehicle using 3” or larger lift blocks under the rear leaf pack, it is HIGHLY RECOMMENDED to install traction bars. With any added horsepower, failure to do so may result in harsh shifting and may cause premature transmission and/or driveline damage.