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USD 1899.99
Part #: BT46500

Bully Dog 46500 Heavy Duty Gauge Tuner

Caterpillar, Cummins, Detroit, Paccar (See Application Guide)
Part #: BT46500
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Only the industrys leading tuning manufacturer could bring you a product this revolutionary. Combining the best-in-class features of the Heavy Duty WatchDog and Bully Dogs independently SAE tested tuning, the Heavy Duty Gauge Tuner (HDGT) is the premium performance product for drivers and fleet owners. If you are serious about getting peak performance out of your truck while saving money on fuel and repairs, the HDGT is for you.

The Tuner:
No other product can compete with the superior tuning options of the HDGT. Owners can choose between the Economy tune, the Economy + Power tune or opt for custom tuning.

Economy Tune:
Tuning for Mileage Gains Subjected to Bully Dogs rigorous on-road beta testing and then confirmed by independent SAE testing, the Economy tune consistently helps drivers achieve mileage gains of 6-12% or more.

Economy + Power Tuning:
Tuning for Mileage Gains and Additional Power. The Economy + Power Tune safely increases the horsepower and torque of your truck along with proven economy tuning. Users can expect horsepower and torque gains of 18% allowing your truck to perform better while under load, maintaining speed and gaining up to 1 ½ to 2 gears in the hills.
Custom Tuning:
For drivers who want a little bit more, Bully Dogs professionally trained staff offers complimentary custom tuning.

The WatchDog:
The HDGT includes Bully Dogs state-of-the-art WatchDog technology which automatically monitors the safety of your engine. Simply set the safety parameters and the WatchDog will alert you if something is wrong that could potentially damage your engine or transmission.

The Driving Coach:
The Driving Coach helps you achieve your mileage goal by giving you real-time visual and optional audible feedback. Driving Coach Reports can be generated to track your trucks performance.

The Mini Mechanic:
Waiting for a mechanic to determine why your check engine light is a waste of both time and money. Now you can do it yourself.

The Speed Limiter:
Drivers going in and out of Canada no longer have to waste time having their speed limiter modified and paying costly change fees or fines. The HDGT allow you to switch the speed limiters yourself saving you time and money every trip.

1995-1998 14.6L CAT 3406E
1995-1998 15.8L CAT 3406E
2002-2010 7.2L CAT C-7
2004-2010 9.3L CAT C-9
1999-2003 10.3L CAT C-10
2004-2010 11.1L CAT C-11
1997-2003 12.0L CAT C-12
2004-2010 12.5L CAT C-13
1999-2003 14.6L CAT C-15
2005-2010 15.2L CAT C-15 ACERT
1999-2003 15.8L CAT C-16
1999-2003 18.1L CAT C-18

1998-2000 14.9L Cummins N14 
2000-2003 14.9L Cummins ISX CM570 Signature 
1999-2003 10.8L Cummins ISM CM570 
2007-2010 8.3L Cummins ISC 
2010-2016 8.3L Cummins ISC 8.3 
2007-2010 8.9L Cummins ISL 
2010-2016 8.9L Cummins ISL 9
2004-2010 10.8L Cummins ISM
2010-2011 11.9L Cummins ISX 11.9
2011-2016 11.9L Cummins ISX 12
2011-2012 14.9L Cummins ISX 15 CM2250
2013-2016 14.9L Cummins ISX 15 CM2350
2017-2019 14.9L Cummins X15 Power
2004-2007 14.9L Cummins ISX CM870
2008-2010 14.9L Cummins ISX CM871
2007-2016 6.7L Cummins ISB

2007-2016 12.8L Detroit DD13
2007-2016 14.8L Detroit DD15
2010-2016 15.6L Detroit DD16
1999-2003 12.7L Detroit Series 60 DDEC 4
2004-2007 12.7L Detroit Series 60 DDEC 5
2001-2003 14.0L Detroit Series 60 DDEC 4
2004-2007 14.0L Detroit Series 60 DDEC 5
2008-2010 14.0L Detroit Series 60 DDEC 6
2007.5-2010 7.2L Mercedes MBE 900
2007.5-2010 12.8L Mercedes MBE 4000

2010-2012 12.9L Paccar MX
2013-2015 12.9L Paccar MX-13
2007-2016 6.7L Paccar PX-7
2008-2012 8.3L Paccar PX-8
2013-2015 8.9L Paccar PX-9


  • MFG. Number 46500
  • Manufacturer Name Bully Dog Heavy Duty
  • Shipping Weight 2.00 lb.
  • Shipping Length 11 in.
  • Shipping Width 4 in.
  • Shipping Height 14 in.
  • Fuel Type Diesel
  • UPC 681018465007
  • Prop 65 WARNING: Cancer & Reproductive Harm -


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Questions and Answers

Will this product work on Detroit series 50 engines?
View Staff Answer 
No. The Bully Dog 46500 Heavy Duty Gauge Tuner will only work on the Series 60 engines.
I have a 2008 Kenworth with an ISX set to 600hp. What kind of hp increase can I expect with the 46500? I pull supersize loads that have high wind resistance as well as grossing over 100k lbs
View Staff Answer 

The HDGT will provide a list of available engine tunes.

Stock: Original factory power levels.

Economy: 6-12% improvement in fuel mileage (with good driving habits).

Power/Economy: 6-12% improvements in fuel mileage (with good driving habits) plus approximately 18% gain in engine power output.

How many hp i can get I have a international 8600 2010 with the cummins ism 330 hp if use the bully dog programer how many hp can i get
View Staff Answer 

The BULLY DOG 46500 HEAVY DUTY GAUGE TUNER will provide 75-100 extra horsepower.

i have 3406e cat how much horse power would i gain and would i sacrafice reliabilaty for power
View Staff Answer 

The BULLY DOG 46500 HEAVY DUTY GAUGE TUNER will provide 75-100 extra horsepower without sacrificing any reliability.

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Emissions Notice

This product is not legal for sale or street use in California. Certain aftermarket products are subject to governmental emission standards regulated by the California Air Resources Board. In order for these products to be legal on a specific vehicle in California, the part number must receive a CARB Executive Order (EO) number. This number makes the part legal for use only on specific years, makes and models of vehicles. A decal with CARB EO number for these parts must be displayed in the engine bay to satisfy smog inspection requirements.