Sensor docking station pyrometer installation, Choosing a location: pre-turbo vs. post-turbo – Bully Dog 4038x Sensor Docking Station User Manual
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Sensor Docking Station
Pyrometer Installation
Choosing a Location: Pre-Turbo vs. Post-Turbo
The location of the pyrometer probe will make a significant
difference in the exhaust gas temperature that is measured
and displayed on the GT or WatchDog. An incorrect
interpretation based on this information can lead to vehicle
damage. Be sure to consider the following points when
choosing a place to install your pyrometer:
Horsepower Output
If the vehicle is running significantly more horsepower than
stock (100+ horsepower), it is strongly advised that both
pre-turbo and post-turbo pyrometers be installed. (Both
pyrometers should be installed within the recommended
distance from the turbocharger.)
Preferable Mounting Location
Pre-turbo mounting is generally recommended because it
provides the most accurate vehicle operating temperature.
Determining a Safe Range of Operation
Regardless of the location of your probe, the Pyrometer
Calibration Procedure on page 26 will help you determine a
safe range of temperatures for your vehicle so you can set up
automated warnings or defuel points (if available).
Installing a pyrometer can be difficult because the exhaust
system must be drilled and tapped. Bully Dog recommends
that you utilize professional assistance if you have not had
experience with drilling and tapping.