Banks vs. the competition!

The Derringer L5P tuner is the only option you should be plugging into your truck. The other guys claim big numbers but simply don't deliver! We tested every other tuner on the same dyno, same day, same weather conditions, and with the same technician. There’s only so much you can do by just intercepting the fuel rail pressure sensor. That’s where all the others fall short. The Derringer is the only tuner that actually utilizes your truck’s ECM to make intelligent calculations. Hundreds of man-hours went into Derringer's development and the results are nothing short of impressive.

NOTE: Dr. Performance and Stealth both use the same box.
Test Vehicle: 2017 Chevrolet Silverado 3500 Dually 6.6L Duramax L5P. Factory intake and exhaust. All tests run on the same truck, same day, same conditions. Tested on Mustang DYNO, 10-second sweep.

AutoRate® Dynamic Tuning

Unlike the fixed tuning used by others, the Derringer calibration is continuously adjusting to provide you the peak possible performance under every driving condition. By utilizing the power of the OBD-II data, the tuner intelligently fine-tunes its calibration on the fly without you having to change its power level.

• Exhaust Gas Temperature (EGT) – The Derringer senses your engine’s EGT and intelligently modulates fueling to maintain a safe maximum EGT, protecting your turbo and engine.
• Altitude compensation – The Derringer senses ambient air pressure, controlling the turbocharger to maintain added boost and power as altitude increases.
• Diesel Particulate Filter (DPF) Regen – The Derringer tuner constantly monitors your DPF regen status and will optimize its calibration to ensure the DPF regen process completes successfully.
• Accelerator Pedal Monitoring – The Derringer senses accelerator pedal position to roll in additional power progressively, optimizing part-throttle fuel economy and giving max power when you ask for it.
• Coolant Temperature Monitoring – The Derringer senses coolant temp to control added power. During warmup, no power is added below 120° F, then power is ramped in and fully available above 150° If the coolant overheats for any reason, the Derringer starts removing its power at 230° F, and additional power is totally removed if you exceed 240° F.
• Full Power Timer – The Derringer allows for 30 seconds of wide-open throttle before transitioning to the recommended power level for sustained tow/haul. (Our research has shown that your ECM when at full power will hit 1450° EGT and after a minute or so will pull out fuel to cool things down. So, we do the same thing.)

TransCommand® Active Transmission Safety System

In addition to AutoRate Adaptive Tuning, the Derringer utilizes key engine and transmission parameters to enhance shift performance and improve the longevity of your transmission. Because the competitors lack the essential OBD-II data, they always add power at wide-open throttle—no matter what! This can cause excessive transmission slip, torque converter clutch slip, and even 100+ HP engine derates in order for the transmission to complete the shift. This harms the overall performance and degrades your transmission. The Derringer is meticulously calibrated and extensively tested to properly modulate power during shifting, optimizing performance and safety.

• Intelligent Shift Tuning – The transmission shift request signal is monitored to optimize the power level prior to the shift protecting the transmission, increasing shift speed, and avoiding ECM power derates.
• Boost and Fuel by Gear – Gear based calibration allows for optimum traction and performance
• Torque Converter Clutch Slip Monitoring – The Derringer adjusts to modulate TCC slip to safe levels.
• Transmission Slip Monitoring – The Derringer adjusts calibration to modulate transmission slip to safe levels

ActiveSafety® Health Monitoring

The Derringer is the only tuner on the market to include ‘Active Safety’ health monitoring circuitry. This active failsafe system utilizes bypass relays to smoothly transition your vehicle to stock power levels in the event of any trouble signs in the Derringer. The system constantly monitors various parameters over 250 times a second to ensure that everything is operating as it should. If any competitive tuners lose power or fail in any way, they will instantly trigger a “limp home” mode where all power is lost and the vehicle dangerously slows to a crawl. If the same fault condition occurs to the Derringer it will gracefully remove its additional power and return to stock power levels without a hitch.

• Health Monitoring: Internal self-diagnostics checks the health of the system 250 times per second
• Monitors MAP and FRP signals for out of range condition (disconnected or short circuit)
• Active safety engages if 12-volt power is lost to the Derringer tuner

Additional Features

• Simple plug and play installation
• Warranty friendly: no reflash required and no traces left in ECM
• Enclosed in a compact housing which is easily concealed
• LED Derringer status indicator

Additional Features with iDash DataMonster or SuperGauge

• 6 power levels with on-the-fly, controlled by iDash
• Derringer screen for viewing added power in real-time
• Regen status displayed over power level when Regen is active
• Datalog up to 100 Derringer, engine, or transmission parameters to microSD card
• Update Derringer software and calibration through iDash
• Expand the system with other Banks Bus products
• AirMouse® Ambient Air Density Module
• 4-CH Analog Sensor Module*
• 4-CH Thermocouple Module*

Stock L5P Turbo Limits  

The factory turbo is done at 505 flywheel hp, that’s a gain of 60 horsepower. Above that point, the turbine drive pressure increases dramatically as does EGT and no more boost is available to safely add horsepower. Anyone who claims to deliver more doesn’t understand this engine.

• Derringer connects to your OBD-II port. It sees the whole picture.
• After thousands of man-hours on the dyno and crunching data in the engineering office, we had the best gains – 61 hp and 112 lb-ft of torque.
• Derringer delivers 505 hp and 1001 ft-lb of torque! 60 hp and 91 ft-lb of torque at the flywheel over stock!

The Derringer L5P is the most sophisticated inline tuner available. We hope you have as much fun driving with it as we did making it.