H&S XRT Pro Installation & Operation Manual - Note:
26 XRT Pro Installation Manual • www.hsperformance.com
ed from 25” to 60”. This option can only be adjusted during the Install Download process.
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On some vehicles, entering a tire size larger than 35” may cause the ABS light to illuminate.
Transmission reset / relearn
The automatic transmission on the 2007 - 2010 6.6L LMM Duramax has what is called
adaptive Memory and is constantly learning and adapting to different horsepower levels,
temperatures, driving habits, etc. We highly recommend performing a Transmission Reset
/ Relearn procedure after installing H&S tuning to help the transmission perform correctly
with the added horsepower. The 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:
When re-training the transmission, ALWAYS follow posted speed limits. Do NOT at-
tempt runs in adverse weather conditions such as snow, ice, rain, wind, or any other
conditions that may affect your vehicles traction or impair your visibility!
1. After you have installed the H&S tuning, turn the key to the on position. From the Main
Menu, scroll down until you see the reset Transmission option. Select reset Trans-
mission and follow the on-screen instructions to reset the transmission adaptive memory.
2. After the transmission reset is complete, it is recommended to perform each of the follow-
ing 0-80 MPH runs while in the Performance power level:
•
0-80 MPH @ 25% throttle position, then slow down and come to a complete stop.
•
0-80 MPH @ 50% throttle position, then slow down and come to a complete stop.
•
0-80 MPH @ 100% throttle position, then slow down and come to a complete stop.
The Transmission relearn procedure is complete.
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On any vehicle using 3” or larger lift blocks under the rear leaf pack, it is HIGHLY RECOMMENDED to install
traction bars when adding additional horsepower.
Maxx calibration control
Maxx Calibration Control (MCC) is an advanced engine management software tool that enables
custom tune editing with your H&S tuning device. With the power to control all aspects of engine
and transmission management, MCC gives YOU the ability to control how YOUR engine operates!
When you have exceeded the limits of conventional tuning and want to unleash the power of a
custom tune, look no further than MAXX CALIBRATION CONTROL
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Applications may vary by vehicle make and model, please check our website to see if MCC is available for your
vehicle at www.hsperformance.com/mcc
2007 - 2010 6.6L LMM Duramax Specific Features Continued >>