Bully Dog 4038x Sensor Docking Station - Manual (Page 27)

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Sensor Docking Station
Pyrometer Calibration
In order to prevent heat damage to your engine, use the
following calibration procedure to determine the best
temperature to use for your GT or WatchDog defueling or
temperature warning level setting.
1. Make sure that your vehicle is running at stock
horsepower.
• If you have installed a tune it will need to be
uninstalled (see your GT owner’s manual for more
information on how to do this).
• A “stock” power level is not the same as
uninstalling the tune and will affect the outcome of
the calibration procedure. Make sure to completely
uninstall the tune.
2. Put your engine under a 100% work load.
• You want to achieve the maximum stock exhaust
gas temperature.
• A good way to do this is to complete the following
steps:
a. Find a steep hill with a long road and
a high speed limit.
b. Wait for a hot day.
c. Set up a heavy load on your vehicle.
d. Haul the load to the top of the hill.
3. Check and record the highest temperature read by the
pyrometer during step two.
• This is the upper limit of the safe temperature
region for your engine.
• Use this value as the safety defuel or warning level
setting for your GT or WatchDog.