SKU: 9860163116

Banks Power 66682 Derringer (Gen2) Tuner with ActiveSafety 2017-19 Chevy/GMC 2500/3500 6.6L L5P Banks Power

Sale price$215.55 Regular price$239.50
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Description

Banks Power 66682 Derringer (Gen2) Tuner with ActiveSafety 2017-19 Chevy/GMC 2500/3500 6.6L L5P Banks PowerStops the competition dead in their tracks. Results in torque and power gains across the full operating rpm range, starting right off idle and marching to the shift point in each gear. Derringer is dyno calibrated to use multiple data inputs such as throttle position, rpm, vehicle speed, AFR, Knock and coolant temperature, just like your engine's ECU. Its microprocessor based electronics are able to actively and safely optimize calibrations in real

Stops the competition dead in their tracks. Results in torque and power gains across the full operating rpm range, starting right off idle and marching to the shift point in each gear. Derringer is dyno calibrated to use multiple data inputs such as throttle position, rpm, vehicle speed, AFR, Knock and coolant temperature, just like your engine's ECU. Its microprocessor-based electronics are able to actively and safely optimize calibrations in real time. No competitive product does that.

Derringer has three switched settings: Stock, Plus and Sport. Sport produces Best in Class performance and knocks you back in your seat. The Plus setting is for work use and has a great mid-range feel. When running Plus with a loaded work truck and/or pulling a trailer, your on-ramp merging speeds and passing times are greatly improved.

The electronics are enclosed in a compact housing which is easily concealed and communicates using B-Bus (Banks Bus) with other devices such as our iDash 1.8 DataMonster or iDash 1.8 SuperGauge. The Derringer connects in line with your truck's engine sensors. But, unlike others, it also connects to the vehicle's OBDII diagnostic bus connector.

A CAN (Controller Area Network) transceiver chip communicates with OBDII or B-Bus allowing our microprocessor to talk with the vehicle. And, Derringer's special coolant temp watchdog prevents power addition when the engine is too cold or overheated. The Derringer also auto-adjusts power if knock occurs due to bad fuel. Maximum safe power is all automatic with a Derringer - you just choose your setting.

Banks Derringer Tuner with ActiveSafety, with switch for use with 2017-19 Chevy/GMC 2500/3500 6.6L L5P

  • Simple plug and play installation with easy removal for dealer service
  • Warranty friendly: no reflash required and no traces left in ECU
  • Adds up to 61 hp and 112 lb-ft
  • Loaded with Features
  • Value Priced
  • Destroys the competition, not your vehicle!
  • ActiveSafety protects engine/powertrain
  • 3 power levels with on the fly level changing
  • Interfaces with OBDII Port (On-Board Diagnostics/Information) to communicate directly with the vehicle ECU
  • Enclosed in a compact housing which is easily concealed
  • LED Derringer status indicator
  • Works while in cruise control
  • Expand system with other Banks Bus products
  • Ambient Air Density Module
  • 4-CH Analog Sensor Module
  • 4-CH Thermocouple Module
  • Advanced Water Methanol Module
  • More coming soon
  • Emissions compliant: CARB EO D-161-115

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.

How the Derringer does what it does, and why.

There’s no easy way to make more power your daily driven L5P with GM’s ECU and factory turbo, no magic flash or special chip available. We had to go the tuner route, and making an inline tuner for your truck was no easy task. We have almost a thousand man-hours into Derringer development. Fortunately, we’ve been making tuners for 20 years, so we know what we’re doing.

The Derringer is a plug-and-play microcomputer designed for easy installation, it’s enclosed in a compact housing which is easily concealed, and connects to the iDash 1.8 Super Gauge for the ultimate in information and power selection, unlocking three additional power levels.

AutoRate

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) ‚Äì The Derringer senses your engine‚Äôs EGT and intelligently modulates fueling to maintain a safe maximum EGT, protecting your turbo and engine.
  • Altitude compensation ‚Äì The Derringer senses ambient air pressure, controlling the turbocharger to maintain added boost and power as altitude increases.
  • Diesel Particulate Filter (DPF) Regen ‚Äì 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 ‚Äì 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 ‚Äì The Derringer senses coolant temp to control added power. During warmup, no power is added below 120 degree F, then power is ramped in and fully available above 150 degree If the coolant overheats for any reason, the Derringer starts removing its power at 230 degree F and additional power is totally removed if you exceed 240 degree F.
  • Full Power Timer ‚Äì If set on Sport level, 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 the stock L5P when at full power will hit 1450 degree 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 170 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 ‚Äì The transmission shift request signal is monitored to optimize the power level prior to the shift protecting the transmission, increasing shift speed and avoiding ECU power derates.
  • Boost and Fuel by Gear ‚Äì Gear based calibration allows for optimum traction and performance
  • Torque Converter Clutch Slip Monitoring ‚Äì The Derringer adjusts to modulate TCC slip to safe levels.
  • Transmission Slip Monitoring ‚Äì The Derringer adjusts calibration to modulate transmission slip to safe levels

ActiveSafety

The Derringer is the only tuner on the market to include Active Safety, an active failsafe system that 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 at over 50 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.

  • Internal self-diagnostics checks health of the system 50 times per second
  • Monitors MAP and FRP signals for out of range condition (disconnected or short circuit)
  • Watchdog timer constantly monitors CPU activity
  • Active safety engages if 12-volt power is lost to the Derringer tuner

Additional Features

  • Simple plug and play installation with easy removal for dealer service
  • Warranty friendly: no reflash required and no traces left in ECU
  • 3 power levels with on the fly level changing (with switch)
  • Enclosed in a compact housing which is easily concealed
  • LED Derringer status indicator
  • CARB EO applied for

Additional Features with iDash 1.8

  • 6 power levels with on the fly level changing using iDash
  • Optimized Derringer layout to view vital data
  • Regen status displayed over power level when Regen is active
  • Power added bar graph shows Derringer power being added
  • On-screen Derringer Status Indicator
  • Datalog up to 100 Derringer, engine or transmission parameters through microSD card
  • Corrects MAP and FRP parameter to accurate readings
  • Update Derringer software and calibration through iDash 1.8 using microSD card
  • Expand system with other Banks Bus products
  • Ambient Air Density Module
  • 4-CH Analog Sensor Module
  • 4-CH Thermocouple Module
  • Advanced Water Methanol Module
  • More coming soon

Modules coming soon

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 ‚Äì 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.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 9860163116

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4.1 ★★★★★
Based on 15 reviews
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SKI
West Palm Beach, US
★★★★★ 5
Love these!
Color: Pink & Beige, Size: Small(fits up to size 7)
Love these! As I write this review, I’m sitting in my recliner with these on. I have had other silicone socks in the past and would like to share a few of the things that I have learned. These fit great! The others were 2-3 sizes too big because you could not order a size. I wear a size 7 women’s shoe. I got the smaller size. I walked around my apartment in my old ones and they got kinda yucky. Now, I sit in my recliner, put them on and chill for a few hours. I now take them off and put in a ziplock bag so they stay nice and clean (no cat hair!). I use them once a week usually on Saturday or Sunday as I’m a working girl. Also, I use Auqaphor before I put them on and put cotton socks on after I’m finished. Your feet will be SO soft. This is not a one and done…I do this every week especially during sandal season! I know this was lengthy and I hope you got some tips.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
M
Verified Purchase
Mrs. Clark
West Palm Beach, US
★★★★★ 5
Warm, roomy, hopefully long lasting w/use!
Warmy Dormy is what we say when we feel comfortable and warm in anything like a heated blanket or footed pjs! These feel warmy dormy all day long!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 19, 2025
A
Verified Purchase
avalancheryder
West Palm Beach, US
★★★★★ 5
Absolute game changer for chronically dry feet/cracked heels
Size: S (up to size 7)-Beige
I had recently bought a pair of silicone heel/ankle wraps to fill out my boot a little since I noticed my heels were lifting when I was skating. I tested them out around the house and noticed they left my heels softer while the rest of my sockless feet got quite dry. So I got these full foot silicone socks to see the effect of having my whole foot covered. I slather the entirety of my feet with Dr. Scholl's Severe Cracked Heel Restoring Balm (love how convenient it is to apply it to my feet with the solid stick form) and then slip them into these silicone socks. After just a couple hours, when I pull out my feet they're (a teeny bit sweaty at first), but then overall soft and smooth and have absorbed the balm fully leaving barely any residue in the silicone sock. I find these silicone socks generally comfortable; I wear them in the evenings while relaxing on the couch, take them off after a couple hours and let my feet breathe a bit, and then reapply my balm and socks and wear them to bed. If I wake up in the middle of the night, which I almost always do (not because of the socks), I'll take the socks off and allow my feet to breathe again. I wear a woman's size 6 shoe and the small size is pretty comfortable. However, I made the mistake of wearing them while being on my feet for a couple hours straight during household chores -- they must've somehow cut off my circulation a bit with the standing, so I wouldn't recommend wearing these silicone socks while being active. And since they're not exactly my foot size, they slide around sometimes and will start to feel tight at my big toe. But if that happens, I just tug on the toe area of the sock to give my big toe more wiggle room and problem solved. Prior to wearing these socks, I was soaking and doing heavy duty exfoliation of my feet every week. These socks seem like they'll work to help me extend the time between soakings and exfoliations. The 5 pack is a great value. So far none have torn, so they seem rather durable. Not sure what I could even do to tear a hole in these.
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Reviewed in the United States on January 16, 2026
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Verified Purchase
Beverly Durham
Pawtucket, US
★★★★★ 5
Works wonders
Size: M (up to size 9)-Beige
Works wonders for dry feet, like really dry, hard feet.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 23, 2026
T
Verified Purchase
Therapy by the Sea
Lexington, US
★★★★★ 4
EXCELLENT FEET MOISTURE PROTECTION
Size: S (up to size 7)-Beige, Size: S (up to size 7)-Beige
Why did you pick this product vs others?: I have burns on my feet and needed something that I could put burn creme on and still walk around in with. I tried other silicone footsie but they would teae really easily. So far these are doing really well for this purpose. They are holding their shape too. The only caution I have is the same with all silicone footsies: They can be slippery on wet floors, so also wear with socks over them. The biggest issues is when they say a size they mean it. The silicone used in these have little give in them, so they won't stretch out and loose their shape. That can be a good thing, or not so good, depending on how well they fit your feet and what your intent is with wearing these. The other issue is if they fit snug around those toes, that tends to be where the first tear in the material will happen. Because of how these are made, the tear is actually more like cracking in the material and once it occurs you won't be able to get much use out of the sock after that. If you are planning to wear them around the house or for long term use, I suggest going up a size or look for the toeless options.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 5, 2025

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