Description
Overview
Take command of your Jeep with the Superchips Flashpaq 3874 Vehicle Tuning Flash Tool—a handheld programmer engineered to unlock the performance and precision that factory calibrations leave on the table. Built for Jeep Wrangler TJ and JK owners, the Flashpaq combines Flashcal’s legendary adjustment capabilities with genuine performance tuning power, giving you the power, precision, and control to tailor your Jeep exactly the way you drive it. Whether you’re running the 3.6, 3.8, 4.0, 4.7, 5.2, or 5.7 gas engine, this is the go-to upgrade for a smarter, more responsive Jeep.
Two Tools in One
The Flashpaq 3874 is designed to be the best of both worlds. On one side, you get Flashcal’s dialed-in adjustment features that let you fine-tune the details that matter for how your Jeep drives and feels. On the other, you get real performance tuning that reprograms your vehicle for improved responsiveness and drivability. It all lives in one easy-to-use handheld device with a full color screen, so navigating menus, monitoring your setup, and applying tunes is clear and straightforward.
Key Benefits
- Superchips Flashpaq 3874 handheld flash tool built specifically for Jeep Wrangler TJ and JK applications
- Combines Flashcal’s proven adjustment capabilities with performance tuning power in a single device
- Full color screen for easy navigation and clear on-device readouts
- Covers gas engine applications including the 3.6, 3.8, 4.0, 4.7, 5.2, and 5.7
- C.A.R.B. EO # D-330-21 (gas) and D-802-5 (diesel) referenced for the platform
- Categorized as a tuner and programmer for gas fuel-type vehicles
Precision, Power, and Control
Superchips has long been a trusted name among Jeep enthusiasts, and the Flashpaq 3874 carries that reputation forward. Instead of settling for the compromise of factory programming, you can reprogram your Jeep to better match your goals—whether that’s on the trail, on the street, or somewhere in between. The result is a Jeep that feels more like yours: sharper, more capable, and set up the way you want it.
Fitment
This flash tool is designed for Jeep Wrangler TJ and JK models across the listed gas engine options: 3.6, 3.8, 4.0, 4.7, 5.2, and 5.7. Please confirm your specific engine and model year compatibility before ordering to ensure the correct application.
Emissions Information
Fuel type is gas, and this product is categorized under Tuners and Programmers with Emission Code 1. Note that it is not 50-state legal. This product carries a California Proposition 65 warning. Related C.A.R.B. Executive Order numbers are D-330-21 (gas) and D-802-5 (diesel). Please review applicable regulations for your area prior to installation and use.











