Bully Dog 40390 PCH with Pyrometer Lead - Manual (Page 13)

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installation Step 5
STEp 5: pyROMETER CALIBRATION pROCEDURE
1. Vehicle must be set to Stock HP/TQ levels-meaning no HP/TQ modifications of any kind (downloader
or plug-in modules).
2. Engine must be put under 100% load during driving to establish a maximum temperature that the
vehicle is able to reach at a stock horsepower rating. A good way to establish that the vehicle is reaching
a maximum exhaust gas temperature is to drive up a high or pull a trailer under heavy acceleration on
a hot day.
3. While performing step 2 record the highest exhaust gas temperature that was reached during the
test.
4. The exhaust gas temperature recorded during the pyrometer calibration procedure is the highest tem-
perature that that vehicle should reach to remain in the safe region. This is also the temperature that
can be used as the safety defuel temperature on GT diesels and PMTs.
ATTENTION: It is generally OK to venture above this temperature range, but do not go more than 200
degrees above this temperature and do this at your own risk.