Top 10 Best Diesel Tuner Based On Customer Ratings

An easy way to boost power without even popping the hood
Makes your throttle more responsive
Optimizes drivability
Adds some bottom-end horsepower
Pre-loaded with dyno-tested performance programs designed specifically for your car or truck

Most comprehensive, state-of-the-art, multi-gauge/tuner touch-screen display on the market
3rd Generation design is faster and more capable than ever
Power levels are included and are designed for daily driving, towing, performance and extreme
Up to 135 HP and 240 lb-ft TQ
Monitor key vehicle parameters like EGT, regen cycles, trans temp, boost, RPM and dozens more with a full color, 5” capacitive touch screen with auto-dimming

Brand New Superchips Flashpaq F5 In-Cab Tuner, HEMI Gasoline & 5.9L/6.7L Cummins Diesel, Compatible with 1998-2014 Dodge RAM & Chrysler Vehicles (Superchips Part #3845)
The Flashpaq covers HEMI gas trucks & 5.9L & 6.7L Cummins diesel engines. Whether you are driving a 5.7L HEMI truck, Chrysler 300C, or a Cummins diesel, this tuner is designed to deliver a quick, safe power that will bring instant impressive gains & features. Fitting in the palm of your hand, the Dodge/RAM Flashpaq plugs directly your car or truck diagnostic port & includes an intuitive menu structure to select a performance, tow, or economy tune.
All coverage, both gas diesel, is 50 state legal in the Flashpaq. This is a performance tuner that offers more bang for your buck than anything else on the market.
Features: Corrects speedometer for tire upgrades between 26-40″ | Speedometer re-calibration for gear/axle swaps up to 5.38 | Transfer case gear low: 2.72-5.00 | Sway bar disconnect in 2HI (up to 25 MPH) | Daytime running light options | 1 touch lane change on/off | TPMS On/Off | TPMS Adjust | Fog light droput on/off | Daytime running light dropout on/off |
NOTE: Features may vary based on year, make & model | NOTE: 2011-14 Ram 5.7L 2500 & 3500 models are not supported by this product | NOTE: Does not support CAB & Chassis applications

Wide make & model fit – Fitting a wide array of Ford, Dodge & GM Diesel Models. Enter your vehicle above to verify compatibility. Please contact Bully Dog support for assistance.
Fuel economy – Enjoy fuel saving preloads for long-haul and around town driving. As well as other downloadable features
Heads up display – Monitor over 15 performance parameters at a glance with a dynamic LCD display mounted on a pillar, window, or dash. Offers better control of defueling and regeneration
Pick your power – Utiliize multiple preloads and up to 10 custom tune files to match your vehicle and performance needs
Code clearing – Diagnose and clear trouble codes to ensure proper engine operation