2011-2015 Duramax LML Bully Dog DPF Delete Tuner BUL LML 40428


Product Highlights:

Duramax LML Bully Dog DPF Delete Tuner

This Duramax LML Bully Dog DPF Delete Tuner features the following:

     • Tow 40-50HP

  • Performance 70-80HP
  • Extreme 110-120HP

2.5” Color screen

Allows removal of DPF/Cat, EGR & Urea injection

Built in gauges & safety features

• Precisely tune engine with HP gains

• Remove/Adjust top speed limiter

Speedometer recalibration for use of non-stock size tires or gearing

Enable/Disable factory “special features”: High idle, fogs w/highs, seat belt chimes, daytime running lights, etc.

Automatic safety back-down: Controlled by EGT, Boost, Trans. Temp, and Coolant Temp

Bully Dog products are developed with you in mind and each of you has a different need, want and desire. Our products, all the way back to the first propane kits, reflect that. Bully Dog products are built to be flexible, allowing each user to get their own desired result, from outrageous performance on the race track to improved fuel economy driving down the highway. Bully Dog products have you covered with increased performance, added safety and improved economy.


2 reviews for 2011-2015 Duramax LML Bully Dog DPF Delete Tuner BUL LML 40428

  1. Ashton

    I was a little shocked by the power gain on my 15.5 lml. In the hot tune it put down 530 rwhp. My truck has only a 5″ straight pipe and a bit of intake work with no lift pump. Fuel economy, power and drivability are relatively good. I use the 50 hp tune for towing and it feels pretty strong. It’s been on the truck for 55000 km’s. Obviously custom tuning is going to be better but they’re not bad.

  2. Kellen

    Was wondering if this will work on my 2015.5 duramax and will I be able to shut off all emissions with this so I can run a straight pipe with no issues?

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