63
ECM TUNER
Introduction
Updating
Physical
Installation
Installing the
Tune
Uninstalling
the Tune
Operating the
HDGT
More
Information
• A helpful website for looking up DTC codes:
http://engine-codes.com
• You can also search for information about DTC codes
with your favorite search engine.
Show Settings
View ECM Tuner and vehicle information. See “Checking GT
Status” section for more information about checking the ECM
Tuner status to determine if the unit has been locked to a
vehicle.
Uninstall Device
Begin the process of uninstalling the ECM Tuner tune from the
engine computer.
IMPORTANT NOTE: Most DTCs indicate a problem with the
engine, not the ECM Tuner. To determine if the ECM Tuner is
causing a DTC, follow these steps:
1. Uninstall the tune.
2. Drive the vehicle for about one week.
‣ If the DTC comes back during this time, there is a
problem with your vehicle and you should contact
an OEM certied mechanic.
‣ If the DTC doesn’t come back during this time,
proceed to the next step.
3. Reinstall the tune.
4. Drive the vehicle for about one week.
‣ If the DTC comes back while the tune is
reinstalled, contact Bully Dog technical support.
IMPORTANT NOTE: This step actively reprograms the engine
computer (ECM/ECU); therefore, it is very important to be
fully informed and prepared before beginning the uninstall
process.