Bully Dog’s new BDX hand-held performance tuner gives drivers the edge they need, whether tackling tough terrain, pulling a heavy payload or maximizing fuel economy on the highway. Its sleek design, full-color display and customizable gauges help track and adjust powertrain performance to deliver more horsepower and torque when it’s needed most. Cloud-based tune delivery over built-in WiFi means that the BDX will always be running the latest tuning- enabling drivers to stay one step ahead of the pack.
The most aggressive preloaded diesel tune. Good for everyday use, racing, or economy but not recommended for any type of towing.
The Street tune has less power than Performance with a moderate gain over stock, safe for light towing, under 5,000 lbs.
This tune should be used when towing any significant load as the shifting is specific for towing.
For heavy loads, the engine and boost are left stock and only the transmission shift points are tuned.
Helps to increase engine braking while coasting to help lower braking temperatures.
Locked at TC
Keeps the torque converter locked during deceleration to aid in engine braking.
Lock In 1-2-3
Locks the torque converter in 1st, 2nd and 3rd gear.
Agg. Tow Haul
More aggressive shift schedule keeping the engine in its power band longer.
Corrects shift patterns / speedometer for aftermarket axles / parts. (Not available on all vehicles)
Sets tire size to correct shift patterns/speedometer. (Not available on all vehicles)
Sets idle speed in RPM.
On/Off setting disables traction control without using the TCS button.
Increase or Decrease the WOT shift points of each gear individually by MPH.
% change in transmission pressure during shifts. (+ equals firmer, - equals softer)