H&S Mini Maxx, Installation Manual

Page: 45 / 62

1-888-628-1730 • Mini Maxx Installation Manual 45
low Boost fueling adjustment
This adjustment allows you to limit the amount of fuel delivered based upon turbo boost
levels. 0 will have the least smoke output, 5 will have the most. By skipping this feature, the
tuning will default to level 2.
Speed limiter
This option allows for the adjustment of the factory speed limiter. Most 6.4L Powerstroke
trucks have a 95 MPH speed limiter from the factory. The limiter can be adjusted from 55
MPH to 200 MPH. This option can only be adjusted during the Install Download process.
Tire Size calibration
This option allows for the re-calibration of the factory speedometer to adjust for non-stock
sized tires. For the most accurate speedometer reading when using non-stock sized tires, it
is best to measure the diameter of the tire using a tape measure rather than going by the
printed tire size. In additon, using a GPS is a great way to dial in your factory speedometer.
Entering a larger tire size will cause the factory speedometer to read higher while entering a
smaller tire size will cause the factory speedometer to read lower. The tire size can be adjust-
ed from 25” to 45”. This option can only be adjusted during the Install Download process.
TPMS adjustability / Disable
Many 2008 - 2010 6.4L Powerstrokes are equipped with a TPMS or Tire Pressure Monitoring
System from the factory. This system is designed to alert the driver of a problem with the
vehicles tire pressures but is often a nagging inconvenience for those individuals want-
ing to run lower pressures or get rid of the TPMS sensors altogether. H&S Performance
has a designed solution for those individuals. By using your H&S tuning device and a 6.4L
Powerstroke TPMS Adapter (Part #709913), you will have full control of the TPMS. Front and
rear tire pressures will be independently adjustable from 0 - 100 PSI as well as the option to
Disable the TPMS completely if removing the TPMS sensors from the vehicle. All changes to
the TPMS must be done with the 6.4L Powerstroke TPMS Adapter in place and the Adapter
must be removed after changes are made to resume normal tuner function.
Transmission relearn
The 5R110 automatic transmission on the 2008 - 2010 6.4L Powerstroke has what is called
adaptive Memory
and is constantly learning and adapting to different horsepower levels,
temperatures, driving habits, etc. After completing the Install Download process on the 6.4L
Powerstroke, the Transmission Adaptive Memory is automatically reset. We highly recom-
mend performing a Transmission Relearn procedure after installing H&S tuning to help the
transmission perform correctly with the added horsepower. The 5R110 automatic trans-
mission will eventually learn over time on its own, but the relearn procedure gives a good