Bully Dog gauge GT tuner User Manual

GT DIESEL

GT Diesel
Part #40420

Not legal for sale or

use in California on

pollution-controlled vehicles.

Doc. 40420-99 v3.5

i

GT DIESEL

CONTENTS

About the GT ......................................................... 2-16

Special Functions.......................................................17

Preview of Basic Installation Steps .............................................2

California Emissions Regulations ............................................... 2

Tuning Information ................................................................... 2

Vehicle Applications ...................................................................3

Parts List .................................................................................... 4

Parts Description .................................................................... 5-6

Button Navigation .....................................................................7

The Main Screen.........................................................................8

Available Options – All Models .............................................9-16

Change Vehicle ..............................................................................................9

Install Download ...........................................................................................9

Gauge Setup ............................................................................................9-10

Performance Testing ....................................................................................11

DPF Burn-Off ...............................................................................................11

Special Functions ........................................................................................11

Diagnostics ..................................................................................................11

Driving Coach Setup ..............................................................................12-14

Vehicle Setup ...............................................................................................15

User Options ................................................................................................16

Show Settings .............................................................................................16

Uninstall Download ....................................................................................16

Update Firmware .........................................................................................16

Vehicle Specific Download Features ............................18

Speed Limiter ..........................................................................18

Calibrate Speedometer ............................................................18

Low End Power ........................................................................18

Important Warranty Information ...............................19

Updating the GT .................................................. 20-27

Overview .................................................................................20

FAQs about Updating ..................................................................................20

Basic Steps to Update (Short Version) ........................................................21

What You Need to Update the GT ...............................................................21

Updating (Detailed Steps for Windows) ..............................22-25

Troubleshooting Updating Problems ........................................26

Updating (Detailed Steps for Apple) ........................................27

Physical Installation .............................................28-31

Brief Preview ...........................................................................28

Detailed Instructions ...........................................................29-30

Using the Universal Windshield Mount ....................................30

Additional GT Mounting Options ..............................................31

Installing the Tune ...............................................32-37

Important Preparation Steps...............................................32-35

How to Install the Tune ............................................................36

Troubleshooting Installation Problems ....................................37

Uninstalling - Returning to Stock ..........................38-40

What does this mean? .............................................................38

When to Return to Stock ..........................................................38

How to Return to Stock ............................................................39

What if I Don’t Return to Stock? ............................................... 40

How Do I Know if the GT is (Still) Installed? ..............................40

More Information .................................................41-53

Pyrometer Calibration ..............................................................41

Reset Fee .................................................................................41

Performance Testing Software ................................................. 41

Windows Update ................................................................42-48

Contacting Technical Suppor t ...................................................49

USB Mode ................................................................................ 49

Transmission Relearn Process ................................................... 50

FAQs/Troubleshooting .........................................................51-53

1

ABOUT THE GT

Preview of Basic Installation Steps

1. Update the GT. This step is very important!!! See page 20 for more information.

2. Physically install the GT. See page 28 for more information.

3. Install the tune to your vehicle. See page 32 for more information.

IMPORTANT NOTE: You MUST uninstall your Bully Dog engine tune before taking your vehicle in for ANY type of service. There are also other important times to

uninstall the tune. Please see page 38 for more information.

See pages 4-6 for a complete list and description of the items included with your GT.

California Emissions Regulations

Due to emissions regulations in California we oer a 50 state legal product that is legal for use in California. The 50 state legal GT Diesel is
part number 40425. If your vehicle is registered in the state of California you must use our 50 state legal GT Diesel on your vehicle. The 49
state legal GT Diesel, part number 40420, is not legal for use on vehicles that are emissions regulated and registered in the state of Cali­fornia. Installing a 49 state legal GT diesel on a vehicle registered in California can result in certain state penalties imposed by the state of
California. The executive order (EO) is issued by the California ARB to signify that our vehicle tunes have been emissions tested and are legal
for on road use. To discover Bully Dog applications that have an EO number, visit our website at www.bullydog.com/carb_info.php. If your
vehicle has received an EO number the EO label should be in this package. If there is no EO label for you vehicle application and it has been
indicated as legal then please contact Bully Dog Tech Support. See page 49 for more information about contacting technical support.

GT DIESEL

Tuning Information

The results we have provided are typical – variations do occur between vehicles. Some vehicles do not have the extreme power level
setting available or On-The-Fly horsepower adjustability.

SETTING PEAK HORSEPOWER PEAK TORQUE

Extreme Up to 120+ Up to 250+
Performance 75+ 125+
Tow/Economy 50+ 100+
Stock Power Stock Stock

2

GT DIESEL

This vehicle application list is current for GT software version 1.13.8. Check the GT product page at
www.bullydog.com to check for new applications.

VEHICLE APPLICATIONS

CHEVROLET/GMC

EXPRESS/SAVANA

6.6L 2006-2014

KODIAK/TOPKICK

6.6L 2006-2010

SIERRA/SILVERADO

6.6L 2001-2014

FORD

EXCURSION

6.0L 2003-2006

7.3L 1999-2003

F-250-550

6.0L 2003-2007

6.4L 2008-2010

6.7L 2011-2014 *NO 2013
CAB & CHASSIS

DODGE

RAM 2500-3500

5.9L 2003-2007

6.7L 2007-2013

RAM 4500-5500

5.9L 2003-2007

6.7L 2007-2012

3

PARTS LIST

Your GT package should include the following items:

GT DIESEL

1. The GT Head Unit

Part Number: 40420-1

2. OBDII Adapter Plug

Part Number: 40400-105

3. HDMI Cable

Part Number: 40400-100

5. Fuse Tap

6. Fuse Spade

7. Micro SD Card

Part Number: 40410-10

8. Micro SD Card Reader

Part Number: 40410-10

4. Power Wire

Part Number: 40400-101

8. Windshield Mount

Part Number: 40400-102

4. Mini USB

Part Number: 40400-103

You may also want to have the items listed below available when you are installing the GT:

Tools Needed

• Fuse Puller

• Voltage Meter (optional)

• Alternative Mounting Solution (See page 31 for more information.)

Extra Parts (Optional)

• Battery Charger

4

GT DIESEL

The GT Head Unit

PARTS DESCRIPTION

The main component of the Gauge Tuner is the head unit. It has the screen and the buttons that allow you to access all of the
functions and features of the tuner.

GT Front Side:

The GT has seven capacitive touch but­tons. Capacitive touch is a button style
that is sensitive to the presence of your
nger. Capacitive buttons do not need to
be pushed, only touched to activate. The
front of the GT head unit features a 2.4”
LCD screen.

GT Back Side:

1. T-Slot Mount Socket, which allows you to use the GT with dierent
mounting options.

2. HDMI port

3. Micro SD card port

4. Mini-USB port

4

3

5

1

2

PARTS DESCRIPTION

The OBDII Adapter Plug

The GT assembly connects to your vehicle through the diagnostic port, which is located under the dash on the driver’s side. The OBDII
Adapter Plug connects to the diagnostic port on your vehicle and has a connection for the HDMI cable that plugs into the back of the GT
Head Unit. The illustration and numbered list below contain more information about the other parts of this important piece of the GT
assembly.

GT DIESEL

1. OBDII Male End: Connects to the vehicle diagnostic port.

2. Power Wire Port: Connects the GT to the power wire and the vehicle fuse box. Allows

the GT to turn on and o with the key.

3. Fuse: The adapter plug fuse protects the GT from being damaged by unexpected power surges.

4. Power Switch: Changes the active power source of the GT.

The two options are: 1) KEY: this pulls energy from the fuse box through the power wire and allows the GT to automatically turn on and o
based on the vehicle’s ignition key position; and 2) BATT: This provides continuous battery power to the GT directly through the vehicle’s
diagnostic port.

5. HDMI Port: Connects the OBDII adapter plug to the GT Head Unit.

6. Pyrometer/Sensor Docking Station Port: Connects the GT to optional sensors including pyrometers or the Bully Dog Sensor Docking Station.

7. Future Peripherals: Not currently in use – may be used to connect additional devices in the future

6

GT DIESEL

BUTTON NAVIGATION

FUNCTION 1: Press the top left button to enter the Main Menu, also use this button to exit menus.

FUNCTION 2: Press any of the four buttons on the

left side of the GT adjacent to one of the vehicle pa­rameters on the screen will display that parameter in
the large gauge area.

FUNCTION 3: Continuously hold any of the four

buttons to change the Large Gauge style, there are
four dierent styles that pop up.

NOTE: The GT buttons are Capacitive Touch. This means that a light touch is all that is needed to choose different options.

You do not need to push hard or get the buttons to move down or in for the GT to work for you.

7

FUNCTION 4: Only for On-the-Fly Vehicles

Power Level Up

Power Level Down
Use the power level buttons to control power levels
on-the-y only while in the main screen.

FUNCTION 5: Use these buttons to scroll up and

down when GT is in a menu screen.

THE MAIN SCREEN

1. 2.

This picture of the GT main screen has the Driving Coach selected for the Large Gauge option. You can change which gauge is
featured in the upper right corner of the main screen by holding down one of the buttons on the left side of the GT until the gauge
type that you want is shown.

GT DIESEL

Menu button: press to enter the main menu.

Vehicle parameters: To change which
vehicle parameter is displayed in the
large gauge area simply press one of the
four buttons next the preferred vehicle
parameter.

Large Gauge area

Power bar: indicates power level,
but only on diesels.

Instant Economy

Dec. Acc.

Report Card:

B

The Driving

Coach

Analog gauge
with average
and max peaks

3. 4.

Analog gauge
with mini graph

Large real time
graph

Automatic transmission
gear indicator

See page 9 for more information
about changing the information shown
on the main gauge screen.

8

GT DIESEL

These options are presented in the order they appear on the Main Menu. If options are missing in your Main Menu, you
should update your GT. See pages 20-27 for more information on updating your GT.

Change Vehicle

This option allows you to choose the type of vehicle that the GT will be used with. If the tune has already been installed, the Change Vehicle
option cannot be used. Pages 38-40 have more information about how to uninstall the tune and how to check to see if the tune has
been successfully removed.

Install Download

This option allows you to install the tune to the engine computer in your vehicle. If the tune is already installed, this option will allow you to
change certain settings that can only be changed by writing a new tune to the engine computer. Pages 18 and 38 have more informa­tion about the download options and returning to stock.

Gauge Setup

This option will allow you to change which gauges are being displayed on the main gauge screen. Denitions for each type of gauge option

available are listed on the next page.

AVAILABLE OPTIONS  ALL MODELS

Changing the Information on the General Display

1. Choose Gauge Setup from the Main Menu.

2. Press the button on the left side of the GT to highlight the gauge slot you would like to change.

Go Back

Speed

Set Gauge 1

Boost

Set Gauge 2

RPM

Set Gauge 3

Coolant

Set Gauge 4

3. Use the buttons on the right side of the GT to scroll through the dierent functions and highlight the one you want shown on the General
Display.

4. When you are done, use the top left button to go back to the Main Menu and General Display.

GAUGE SETUP

Gauge 1

Use the Up & Down Arrows to

Change the Tranny Tune

Pyro 2

Speed

Boost

®

NOTE: All of the gauge types may not be available through your vehicle’s diagnostic port (OBDII port). This fact is out of the control of Bully Dog; however, Bully

Dog offers a range of add-on automotive sensors and sensor interface equipment. Contact Bully Dog or a Bully Dog dealer to learn more.

9

Gauge Setup (continued)

GT DIESEL

Pyro 1 & 2

Both pyro 1 and pyro 2 measure exhaust gas temperature. The only
dierence between them is the location of the temperature sensor.
These temperature readings are used for defuel and warning level
settings, which can help protect your engine from heat damage.
The availability and location of factory installed pyrometers vary
according to vehicle make and year. All ’07.5 and newer diesel
pickups that are equipped with OEM diesel particulate lters also
include factory installed pyrometer sensors. For all other vehicles,
pyrometer kits are available for purchase from www.BullyDog.com.

Speed

This option shows the current vehicle speed. Monitoring this infor­mation can help you ensure that the speed displayed on the GT and
the vehicle speedometer match the actual vehicle speed. Other im­portant numbers, like the odometer and fuel eciency, are based
on this information. If the speed is displayed incorrectly on the GT,
it can easily be corrected. See page 13 for more information.

Boost

This option shows the turbo boost pressure.

RPM

This option shows the number of revolutions per minute of the
engine. This will help you protect your vehicle and improve per­formance by watching and ensuring that the RPMs stay within the
optimal operating range for your engine.

Coolant

This option shows the coolant temperature. The temperature infor­mation is used in defuel and warning level settings to help prevent
damage to the engine.

Throttle

This option shows the throttle position measurement – it is
displayed as the percent open.
The throttle position information is used by the Driving Coach
to indicate where changes can be made to driving habits to
maximize fuel eciency.

Intake

This option shows the intake air temperature.
Air temperature aects combustion temperature and engine
performance. Adding a Bully Dog Rapid Flow Intake (RFI) closed
air system will lower this temperature, improve performance,
and increase horse power. The Gauge Tuner (GT) is designed to
work with the RFI to get the most out of your engine.

ICP

This option shows the injection control pressure (ICP). The ICP
aects correct fuel injection, and this information is used by the
engine computer to adjust other settings like fuel ow to achieve
optimum engine performance and increase horse power.

Trans Temp

This option shows the transmission temperature.
The transmission temperature is used in defuel and warning level
settings to help prevent damage to the transmission.

MAF

This option displays information from the Mass Airow Sensor.
It is used by the Engine Control Module (ECM), aka: the engine
computer, to determine how much air is going into the engine.
The ECM then sends the correct amount of fuel for optimum
engine performance.

Fuel Econ.

This option displays a real-time measurement of the vehicle’s fuel
economy, shown in miles per gallon.
This information will help you to determine when your fuel
eciency peaks or dies to improve your driving habits and your
bottom line when visiting the pump.

Fuel Flow

This option displays the amount of fuel being used at any given
time; it is shown in gallons per hour.

The following gauge options are provided to allow the GT to
monitor additional sensors that are only available with the
Bully Dog Sensor Docking Station.

A/F Ratio 1 & 2

This gauge option shows the ratio of air to fuel. The GT will use
this information to ensure that your engine is using the correct
ratio to completely burn all of the fuel being used and maximize
performance and eciency.

Only available on Bully Dog Sensor Docking Station part number

40385.

AUX 1, 2 & 3

This gauge option shows the information from sensors connected to
the 0-5V auxiliary inputs on the Bully Dog Sensor Docking Station.

AUX Temp

This gauge option shows the information returned to the Sensor
Docking Station by an optional temperature sensor. The port for
this sensor is marked as 5V out.

Frequency

This gauge option shows the information from a pulsing type of
sensor, like an on-board speed sensor or another optional sensor
that operates on the 0-5kHz 5V pulse range. The port on the Bully
Dog Sensor Docking Station for this gauge option is marked as FN.

10

GT DIESEL

Performance Testing

This feature oers drag racers the ability to complete the 1/4 Mile and 0-100 KPH performance tests.

You can also download saved tests from your GT to your computer and analyze it using the Bully Dog Performance Testing Software. The software
is available by free download from www.bullydog.com. See page 41 for more information about the Performance Testing Software.

There are two dierent styles available for both tests. The GT will show dierent test screens based on the style of test that is currently
selected in the Performance Testing Setup Menu.

SPECIAL NOTE: Street racing is illegal and extremely unsafe. The performance testing feature should only be used on a sanctioned 1/4 mile drag racing track.

Speed Sensitive Performance Test

Once this test is begun, the GT will show instructions to the user to rst bring the vehicle to a stop. Once the vehicle is at zero miles per hour, the test is
ready. The test will automatically start once the vehicle begins to move.

Race Tree Performance Test

Before initiating the Race Tree style performance test it is important that the vehicle should already be at a complete stop. Once the test is begun, the
GT will display a classic race tree on the screen. As soon as the lights on the tree turn green, the GT will begin to record the vehicle’s time. In this style of
test, the GT will not wait for the vehicle to start moving before it starts recording performance data.

1/4 Mile Performance Test

This option will test the vehicle’s performance until the vehicle has
traveled 1/4 mile.

- View Test Results

View the results for the last performance test that was run.

- Save Previous Test to SD Card

Save the results of the last run to the SD card in the GT. All runs
that are saved to the SD Card can be transferred to your computer
using our Performance Testing Analysis Software. For more infor­mation on our Performance Testing Analysis software, see page
41 or visit our website: www.bullydog.com

- Fastest Times

View the results for the quickest 1/4 mile ever recorded.

0-100 KPH Test.

This option will test the vehicle’s performance until the vehicle has
reached a speed of 100 kilometers per hour, which is about the same
speed as 62 miles per hour.

DPF Burn-Off

Also known as Mobile Desoot, this option is not available for all vehicles. See page 17 for more information about this special function.

Special Functions

These options vary from vehicle to vehicle. See page 17 for more information.

Diagnostics

This option reads the Diagnostic Trouble Codes (DTCs) from your vehicle engine. You can also erase these codes from here.

To look up the DTC codes, the following website is very helpful: http://engine-codes.com/

You can also search for more information about DTC codes online using your favorite search engine.

IMPORTANT NOTE: Most DTCs indicate a problem with the engine, not with
the tune or the tuner itself. If you want to know if a DTC is being caused
by the GT or not, uninstall the tune and drive your vehicle for about one
week. If the DTC comes back, there is a problem with the vehicle and you
should take it to a trusted mechanic. If the DTC doesn’t come back, reinstall

11

the tune and test drive for another week – if the DTC comes back while the
tune is reinstalled, contact technical support. Be sure to have your tuner,
vehicle, and a computer with internet access available when contacting
technical support. See page 49 for more information about contacting
technical support.

Driving Coach Setup

The Driving Coach is a special feature designed to be your fuel economy dashboard and information center. It provides real-time visual and audio
feedback about driving eciency and where energy is being lost. The driving coach will help you understand the optimal conditions for your
particular vehicle through real-time observation, giving you the power to maximize your vehicle’s fuel economy.

Two hidden bonuses of driving more eciently are: saving money on fuel and helping the environment!

Before the Driving Coach can give you accurate information, it is important to make sure that the GT is showing the correct speed. In the
sections below, you will nd specic instructions for using the Driving Coach to become the best driver you can be.

Set Economy Goal

This option will allow you to select a fuel economy goal. The Driving Coach will use the economy goal to calculate your driving grade.

It is very important to select an economy goal that is realistic for both your vehicle and the kind of driving you will be doing. If you will be driving mainly
in the city or on the highway, choose a goal that is very close to the advertised fuel eciency for your vehicle in that type of environment. If you will be
doing a mixture, choose an economy goal between the advertised city and highway mileage for your car.

Reset Average Economy

This option will clear the values stored in the GT for the average fuel economy, the number of gallons used, and the grade in the Driving Coach.

Adjust Acceleration

This option will allow you to select the GT sensitivity for the acceleration and deceleration for your vehicle.

Coach Sound Setup

This option will allow you to turn the Driving Coach sounds on or o.

GT DIESEL

Showing/Hiding the Driving Coach

The driving coach is always running, even if you choose not to have the information displayed. You can show or hide the driving coach on the Main
Display by holding one of the four bottom left buttons until the display cycles through to the gauge style that you want.

12

GT DIESEL

Driving Coach Setup (continued)

Checking Speedometer Accuracy

First: Change the Gauge Setup to have the Speed displayed on the main display screen. See page 9 for more information about changing the
information displayed on the main display screen.

Next: Go to a safe place with little to no trac where you can perform a speed test. Make sure the speed limit is at least 60 mph. Here are two dierent
ways to nd out your vehicle’s actual speed:

Method 1: GPS

1. Use a GPS device to compare your actual speed and the speed displayed on the Bully Dog.

2. Calculate the Percent Difference by using

this formula:

Percent dierence =

Example 1: A GPS device reads 65 mph and the GT reads 62 mph for one single moment.

GT speed - GPS Speed

GPS Speed

Step 1. Percent dierence =

Step 2. Percent dierence =

Step 3. Percent dierence = .046 or 4.6% then round up 5%

62 - 65

65

-3

65

Method 2: Stopwatch

1. Use a Stop Watch to measure how long it takes to travel one mile while traveling at 60 mph according to the GT.

Accelerate up to a speed of 60 mph (as shown on the GT)
While traveling at that constant speed, record the amount of time in seconds that it takes to travel exactly one mile.
*Use highway mile markers to ensure that your one mile measurement is correct.

2. Record the time.

3. Calculate the Percent Difference.

If it takes 60 seconds to travel one mile
at 60 mph, then the GT is accurately
reading your vehicle speed.

If it takes 2 seconds more or less than
60 seconds to travel one mile, then use
the formula to the right to calculate the
Percent Dierence.

Once you have calculated the Percent Dier­ence, you can use that information to adjust
the speed display as described below

To calculate the percent dierence use this formula:

Percent dierence =

Example 1: Using a stop watch the actual time it took to drive one mile while traveling at
60 mph according to the GT was 63 seconds.

Step 1. Percent dierence =

Step 2. Percent dierence =

Step 3. Percent dierence =

Recorded Time - 60 seconds

60 seconds

63 - 60

60

3

60

.05 or 5.0%

Adjusting the Speed Display

1. Use one of the methods described in the previous section to determine the exact percentage dierence between the GT and your actual speed.

2. Choose the opposite percentage in the Adjust Speed Display menu.

For example, if the dierence between your actual speed and the speed displayed on the GT was 5%, you should choose -5% (negative ve percent).

13

Driving Coach Setup (continued)

Checking Average Fuel Economy

It is important to check the accuracy of the average economy readout on the GT at least once every changing season. There are many reasons to check
and adjust the average fuel economy, here is one example: The fuel delivered to gas stations during the winter contains an average of 1.3% less energy
than the fuel delivered in warmer seasons. That means that the same amount of liquid is going into the tank, but it is 1.3% less eective, on average.
There are many similar factors that aect your fuel eciency that you cannot control and the GT cannot sense or adjust for. That is why it is important to
adjust the fuel economy of the GT every once in a while.

GT DIESEL

To adjust the Average Fuel Economy displayed by the GT, follow these steps:

1. Go to the gas station and get a full tank of gas.

2. Reset both of the following gauges before driving away from the gas station:

- The Average Economy on your GT.

- The trip odometer on your vehicle.

4. Drive the vehicle for an entire tank (or two)

5. Calculate your vehicle’s average fuel economy by hand using the following equation:

GT Average Economy - Calculated Average Economy

Percent dierence =

Calculated Average Economy

Example 1: Assume the GT Average Economy is 24 mpg and the Calculated Economy is 21.

Step 1. Percent dierence =

Step 2. Percent dierence =

24-21

21

3

21

• NOTE: If the speedometer on the vehicle is not accurate,

then the odometer will also be incorrect. You will need

to be able to calculate the exact number of miles driven

before your next refill.

Step 3. Percent dierence = .142 or 14.2% round down to 14%

6. Use the equation below to calculate the Percent Difference between the average fuel economy that you have calculated and the aver­age fuel economy that is displayed by your GT.

Adjust the Average Fuel Economy

Follow the steps listed below to change the average fuel economy that is displayed by the GT:

1. Go to the Main Menu

2. Choose Vehicle Setup

3. Choose Adjust Economy Display

4. Use the buttons on the right to move up and down the percentages

5. Choose a percent value that is the opposite sign of the Percent Difference that you calculated using the equation above.

- For example, if you determine that the Percent Difference is 14%, you should choose -14%.

14

GT DIESEL

Vehicle Setup

Select Pyro Source

Set Defuel Levels

Adjust Economy Display

Adjust Speed Display

Choose either factory installed or Bully Dog pyrometers.

Set the temperature level at which the extra power level settings on your GT are automatically turned o to protect your engine from damage.

It is also possible to turn each of these settings completely o. This is appropriate if the sensor for that setting is not available or if you do not wish to
have that setting controlled by the GT.

See the Pyrometer Calibration section on page 41 for help in determining the correct temperatures for the defuel settings:

Change the miles per gallon shown by the GT.

This setting should be changed if the GT is showing incorrect fuel mileage. See page 14 for more information about how to do this.

NOTE: The defuel option is only available on vehicles that can adjust horsepower levels on the y. For vehicles that cannot adjust power levels on the y, on screen warn­ings are available in place of automated defueling.

Change the vehicle speed shown by the GT.

This setting should be changed if the GT is showing an incorrect vehicle speed. See page 13 for more information on how to do this.

Pyro 1 Temperature Level

Pyro 2 Temperature Level

Engine Coolant Temp Level

Boost Level

Turn this setting o or add a Bully Dog boost sensor if your vehicle does not
have a factory turbo boost.

Transmission Temperature

Turn this setting o or add a Bully Dog boost sensor if your vehicle does
not have a factory transmission temperature sensor.

Startup Coolant Temp Level

This option was included to ensure that the vehicle is warmed up
properly before the GT tuning options that provide additional power
are available to be used.

NOTE: If the GT is stuck in Engine Warm Up mode, change this

setting to a lower temperature or turn the feature o.

15

User Options

Set Background Theme

Change the display colors on your GT.

Adjust Backlight

Change the brightness for both the day and the night operating modes of the GT.

To change between night and day mode, hold both the right buttons (the up and down buttons) while you are in the general gauge display.

Set Animation Preferences

Turn the Wave Eect on or o. This eect creates a ripple on the screen whenever you press a button.

English/Metric Units

Switch between miles/kilometers and gallons/liters.

Reset to Default

Change the user preferences back to the original Bully Dog default settings.

This option does not change other GT features to default settings.

Show Settings

The Show Settings screen will show you information about your vehicle, the GT, and your current vehicle settings. This screen will also indicate if
the GT tune is currently installed or not installed on a vehicle.

GT DIESEL

Uninstall Download

This option will allow you to uninstall the tune from your vehicle. This process is very similar to installing the tune, so be sure to take the same
precautions listed on pages 32-35.

You can nd more information about uninstalling the download on pages 38-40.

Update Firmware

This option will update the software on the GT itself from the les on the Micro SD card. This is an important nal step to the update process. See
pages 20-27 for more information about updating your GT.

16