Bully Dog Big Rig Custom Tuner is Here!

Get the Best Custom Cummins Big Rig Tuning with Bully Dog

Get the most from your Cummins diesel in a Class 8, Medium Duty, or Motor Home with custom tuning on a Bully Dog Big Rig Heavy Duty Gauge Tuner (HDGT). The Heavy Duty Gauge Tuner with Custom Tuning offers the ultimate in tuning flexibility, allowing you to get exactly what you want of out of your vehicle

Custom Tuning Available For:

• 2010-2023 6.7L ISB with CM2350 & CM2450 ECM
• 2010-2023 8.3L ISC with CM2350 & CM2450 ECM
• 2010-2023 8.9L/9.0L ISL / ISL9 with CM2350 & CM2450 ECM
• 2010-2023 ISX / ISX15 / X15 with CM2350 & CM2450 ECM
• 2010-2023 ISX12 / X12 with CM2350 & CM2450 ECM

Posted on: February 25, 2026

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