INTRODUCTION PARTS DESCRIPTION INSTALLATION OPERATING INSTRUCTIONS INTERNET UPDATES APPENDIX
OPERATING INSTRUCTIONS
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USER GUIDE
If you own a diesel powered vehicle built after January 1st 2007,
your vehicle is equipped with a diesel particulate lter (DPF). This
lter is used in conjunction with a diesel oxidation catalyst. Together
they work to reduce the amount of soot and emissions emitted from
the tailpipe. As soot builds up in the DPF it will begin restricting the
lter. The soot that gathers is automatically purged in one of two
ways: Passive Regeneration & Active Regeneration. Both methods
occur automatically and require no action on your part. During
either of these regeneration methods, you may notice an increase or
change in the exhaust noise & increased EGT.
DPF Regeneration
Passive Regeneration
Passive regeneration occurs when the exhaust temperature (EGT)
reaches an appropriate level in order to oxidize or burn soot to clean
the DPF. This method can happen as a result of normal engine op-
erating conditions, typically when the engine reaches an EGT high
enough to burn o the soot (i.e. heavy towing, high load conditions
etc.) If EGTs do not get hot enough to cause passive regeneration,
then your truck’s engine-control system automatically initiates an
active regeneration.
Active Regeneration
During active regeneration, the truck computer cleans the DPF by
raising the exhaust temperature to a point where the soot is burned
away. This is accomplished through various engine actions which
raise the EGTs in the oxidation catalyst/DPF system to a level where
the soot is burned o. After the soot is burned o, the EGTs and
back-pressure (restriction) fall back to normal levels. In order to help
you know the status of DPF Regeneration, the device will display an
“R” circled in red in the middle top section of the screen anytime ac-
tive regeneration is happening. This indicates whether
the alert is on or o.
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