1-888-628-1730 • Mini Maxx Installation Manual 57
If you have already removed the DPF or if you plan on removing the DPF immediately after
installing your H&S tuning device, you will select REMOVED. If you select REMOVED, you
must Accept our DPF Disclaimer in order to continue with the Install Download process.
DPf / Exhaust Sensors
When running DPF PRESENT 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 DPF REMOVED tuning, it is required that all sensors located in the factory
exhaust system be unplugged from the electrical harnesses
ExcEPT fOr THE PrESSUrE
SEnSOr WHicH MUST rEMain PlUggED in
. All sensors other than the Pressure Sensor
can be removed completely with the factory exhaust if desired. On the 6.6L LML Duramax,
there are usually 3 EGT Sensors, 1 NOx Sensor, 1 UREA Injector, and 1 Pressure Sensor.
The DPF Pressure Sensor is located under the bed in
front of the axle on the inside of the passenger side
frame rail. You may pull the two rubber lines off of the
sensor but
DO nOT UnPlUg THiS SEnSOr!
Un-
plugging of the Pressure Sensor may result in erratic
engine operation and loss of power.
UrEa / Scr System
On the 2011 - 2012 6.6L LML Duramax, there is a UREA system that needs to be unplugged
when running DPF REMOVED tuning. The UREA system must at least be unplugged but can
be completely removed from the vehicle if desired. Failure to unplug the UREA system may
result in a check engine light and/or dash messages, erratic engine operation, and loss of
power. Follow these instructions to unplug the UREA system:
1. The urea injector is located between the CAT and DPF above the torsion bar crossmember.
Unplug the electrical connection and the urea line.
Summary of Contents for Mini Maxx
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