Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Ignitions and Electrical› Computers, Chips, Modules and Programmers
Banks Power
Derringer Tuner (Gen2) with iDash 1.8 DataMonster 2017-19 Chevy/GMC 2500/3500 6.6L L5P
SKU: B003 66793
Moderate — 2–4 hours
Overview
It offers six power levels, adjustable on-the-fly with the included iDash DataMonster, with each level adding approximately 12 hp. The system includes ActiveSafety to protect the engine and powertrain, and TransCommand to safeguard the transmission. The Derringer connects inline with engine sensors and also communicates through the OBD-II port, providing safety features that bypass the module and return the truck to stock power if an issue is detected. It also monitors coolant temperature and adjusts power if knock occurs due to fuel quality.
Show original supplier description
Part #: 66793
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, coolant temperature, and EGT, just like your engine's ECM. It actively and safely optimizes calibrations in real-time thanks to its OBD-II connectivity. No competitive tuner does that.Derringer has 6 levels, adjustable on-the-fly using the iDash. Level 6 produces best-in-class performance. Level 3 is designed for work use and has a great mid-range feel. When running Level 3 with a loaded 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 with other Banks devices such as our iDash DataMonster, iDash SuperGauge, and PedalMonster throttle booster. The Derringer connects in line with your truck's engine sensors. But unlike other tuners, it also connects to the vehicle's OBD-II diagnostic bus.ActiveSafety health monitoring circuitry keeps an eye on the vehicle and the module itself. It checks its health 100 times a second. If it detects an issue, the Derringer instantly bypasses itself, sets a device diagnostic code, and seamlessly returns the truck to stock power. Plus, Derringer's special coolant temp monitoring 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 preferred power level and enjoy the ride.
Features:
- Adds up to +61 hp & +112 lb-ft, 13% quicker 50-70mph passing time
- 13% quicker 50-70mph passing time
Derringer Tuner With iDash DataMonster for 2017-2019 Chevy/GMC 2500/3500 HD 6.6L Duramax, L5P
Vehicle Symptoms
- Lack of power when towing heavy loads
- Sluggish acceleration on highway merges
- Poor passing performance on grades
- Truck feels underpowered compared to stock
- Desire for better throttle response and fuel economy
Relevant Conversations
- Banks Derringer tuner for L5P Duramax review
- 2017 Silverado 2500HD tuner with iDash
- Best diesel tuner for 2019 GMC Sierra 3500
- Derringer vs Edge CTS2 for Duramax
- Does Banks Derringer show transmission temp?
- iDash DataMonster gauge setup for L5P
- Duramax L5P towing tune recommendations
- Banks Power vs PPEI for 6.6L Duramax
- 2018 Silverado Duramax poor passing power fix
- How to install Banks Derringer on 2019 Duramax
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Banks Power |
| Part Number | B003 66793 |
Videos
Driving a 2020-23 Duramax with a Banks Derringer tuner and PedalMonster throttle controller
Banks Derringer Tuner Gen 2 w/ iDash Install: GMC L5P Duramax
L5P Duramax Banks Derringer DataMonster Install
2017-2019 CHEVY/GMC 2500/3500 6.6L Duramax L5P Banks Derringer Tuner w/Switch Install | SSG
Banks Derringer Tuner on a Brand New L5P DURAMAX
Banks Derringer for 17-19 Duramax L5P Inline Tuner Installation Tutorial
[Official] Banks Derringer L5P Installation (Harness Rev C)
Banks Power Derringer Install L5P Duramax
Banks Derringer L5P Review
Banks Power L5P Duramax Product Review
Derringer is the smartest, safest inline tuner available
About MOTORMIA
Buy with Confidence
Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return PolicyShipping
Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.
View Full Shipping Policy