1-888-628-1730 • Mini Maxx Installation Manual 57
2007.5-2010 6.6l lMM DUraMax
HigH sUlfUr caliBraTion
Power levels
Power Levels can be adjusted on-the-fly at the touch of a but-
ton after Installing the Download to the vehicle. The current
Power Level will be saved even if the Mini Maxx is unplugged.
noTe:
The Power Level ratings listed may not be exact for your particular
vehicle. The listed ratings apply to the out-of-the-box tuning that H&S tuning
devices are shipped with. Any custom downloads may result in different rat-
ings and can be found at www.hsperformance.com/update-instructions.
emissions selection
Most 2007.5-2010 6.6L LMM Duramax’s are equipped with an emissions system designed
to run Ultra Low Sulfur Diesel (ULSD) Fuel. If you have removed or modified this emissions
system (or plan to immediately after installing this device), proper tuning must be installed
or the vehicle will not operate correctly. Select REMOVED at this option for a modified
emissions system and high sulfur fuel use. Select PRESENT if your emissions system requires
ULSD fuel.
exhaust emissions equipment
When running ULSD tuning, it is required that all sensors located in the exhaust system stay
in place and plugged in, otherwise you may experience a Check Engine Light (CEL) and even
a loss of power (limp mode).
When running High Sulfur tuning, it is recommended that all sensors located in the factory
exhaust system be unplugged from the electrical harnesses. These sensors can also be
removed completely with the factory exhaust if desired. On the 6.6L LMM Duramax, there
are usually 3 EGT Sensors and 1 Pressure Sensor.
egr emissions equipment
When running H&S High Sulfur tuning, it is not required to unplug or block-off the EGR
system on your 6.6L LMM Duramax to disable it. The EGR system is already disabled in the
tuning and will not function under any conditions. If desired, the entire EGR system can be
unplugged, blocked-off, or completely removed when running H&S High Sulfur tuning.
Power LeveLs
Stock
. . . . . . . . . . . . . . . . . . . .
0 HP
Tow
. . . . . . . . . . . . . . . . . . . .
60 HP
Street
. . . . . . . . . . . . . . .
120 HP
Performance
. . . .
175 HP
