SKU: 97434016950

Banks Derringer Tuner with iDash SuperGauge 20-22 GM 2500HD/3500 6.6L Duramax L5P

Sale price$449.10 Regular price$499.00
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 17 - Jul 22

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Description

Banks Derringer Tuner with iDash SuperGauge 20-22 GM 2500HD/3500 6.6L Duramax L5PAdd power and fuel economy to your Duramax with the most trusted name in diesel performance, Banks Power. Stop the competition dead in their tracks with the Derringer Tuner. Banks delivers 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

Add power and fuel economy to your Duramax with the most trusted name in diesel performance, Banks Power.

Stop the competition dead in their tracks with the Derringer Tuner. Banks delivers 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 six switched settings. Level 6 produces Best in Class performance that knocks you back in your seat. The Level 3 setting is for work use and has great mid-range feel. When running Level 3 with a loaded work truck and/or pulling a trailer, your on ramp merging speeds and passing times are greatly improved.

The electronics are molded into a waterproof connector, which is easily concealed and communicates using B-Bus (Banks Bus) with other devices such as the iDash Super Gauge/Control Center. The Derringer connects in line with the Throttle Inlet Pressure (TIP) and Manifold Absolute Pressure (MAP) sensors. But, unlike others it also connects to the vehicle's OBDII diagnostic bus connector. A CAN (controller area network) transceiver chip communicates with OBD or B-Bus allowing Banks' microprocessors to talk with the vehicle. On top of that, 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.

The Banks difference when it comes to L5P POWER! - Derringer has 6 power levels, adjustable on-the-fly, with a best gain of +117 hp pushing power well above 520 wheel hp to the road. Plus, the massive increase of +225 lb-ft of torque is situated right in the heart of the power band where you need it most. 

How the Derringer does what it does, and why. - There's no easy way to make more power for your daily driven L5P with GM's ECU and factory turbo, no magic flash or special "chip" available. Banks had to go the tuner route, and making an inline tuner for your truck was no easy task. Banks has almost a thousand man-hours into Derringer development. Fortunately, they've been making tuners for 20 years, so it was all in a day's work.

The Derringer is a plug-and-play microcomputer designed for easy installation, it's waterproof for convenient under hood mounting, and connects to the iDash Data Pro Powertrain Information Center 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) - 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.
  • 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 - 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° 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 High Output is calibrated to modulate power during shifts for better clutch engagement. Thanks to its OBD connectivity, Derringer knows when the GM/Allison 10-speed transmission is shifting gears. It reduces its added power momentarily to allow for a smooth shift. Competitive tuners have no idea or simply ignore when the transmission is shifting and continue to add power, overspeeding the transmission and causing long-term damage.

  • Intelligent Shift Tuning - Gear shifts are optimized for each power level to protect the transmission and increase shift speed while protecting against torque converter and clutch slip.
  • Accelerator Pedal Monitoring - Rolls in additional power progressively, optimizing for both part-throttle fuel economy and maximum power when you want it.

ActiveSafety - Banks combines mechanical fail-safe measures to revert to stock in the event of internal failure while also intelligently adding power based on vehicle operating conditions, such as cold or hot coolant temps or knock from bad fuel.

  • 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)
  • Bypass relays smoothly return stock power with no loss of power or "Limp Mode"
  • Active safety engages if 12-volt power is lost to the Derringer tuner
Additional Features with iDash
  • High resolution screen with ultra-wide viewing angles
  • Vibrant high-contrast selectable color schemes
  • Higher speed datalog rate
  • Expanded memory for nearly unlimited vehicle support
  • Over-The-Air updates via Bluetooth

NOTE: CANNOT SHIP TO CALIFORNIA

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: 97434016950

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4.2 ★★★★★
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Stefan
Boise, US
★★★★★ 5
Buy buy buy!!!!
Special Size: 7" Inseam with Pockets, Size: Large, Color: Taupe
Fantastic! I got These a while back k in another color and needed another pair. I got the green, can you say wow! This color is beautiful and bright! They are as comfortable as my other ones! Worth every dime!
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Reviewed in the United States on June 5, 2026
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Aubrey
Fort Morgan, US
★★★★★ 5
My favorite pair
Special Size: 7" Inseam with Pockets, Size: Large, Color: Black
The most comfortable pair of shorts I own. Material is soft, pockets are the perfect size.
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Reviewed in the United States on May 30, 2026
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Sarah
Lexington, US
★★★★★ 4
Cute but run big
Special Size: 7" Inseam with Pockets, Size: X-Large, Color: Flamingo Pink
Color is fantastic. Very naked feeling. Runs big. I’m a size 12/14 and usually wear XL with them sometimes feeling tight. I am pear shaped - 35” waist, 47” hip and these fit but were quite loose in the waist. I might consider sizing down if I wanted to tighter. They would be very a bump-friendly non-maternity option
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Reviewed in the United States on May 28, 2026
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Eimile/ FrecklesNFantasy
Massapequa, US
★★★★★ 5
Super soft with great support
Size: Small, Color: Light Blue/White, Size: Small, Color: Light Blue/White
Bought the top and the matching leggings for a bachelorette trip. Absolutely love them. It’s so soft, it didn’t bother my incredibly sun burned chest at all, the baby blue with white contrast binding looks exactly like the listing. I am a 32C and got a size Small, so it fits perfectly and provided great support. This is 100% a bang for your buck and I will likely buy it again in the other colors.
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Reviewed in the United States on April 27, 2026
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Lyndzie Legg
Pawtucket, US
★★★★★ 5
FLATTERING, HIGH QUALITY
Size: Small, Color: Slate Grey/White
Quality item!! I would compare these to CRZ YOGA. They do not stretch, not see through, and feel buttery soft. I have only used them working out in a reformer pilates class in which I did not notice the leggings falling or the bra stretching. I would size down on the bra. I am a postpartum mommy and purchased a medium and I am nursing. It still was a little too big for my liking. So I went with a small on this order and it fit perfectly. The white lining on the bra and leggings I feel bring a flattering look to my waist for those ladies looking that that aspect. They pulled in all the right parts without creating any spill over. It might not be useful for a high impact workout like running or spinning but any weight lifting or Pilates-type classes it would be perfect for! I bought another set I love them so much. I ran them in the washer and hung dry them as I do all my fitness clothing items.
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Reviewed in the United States on August 5, 2025

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