JB4 Tuner for 2022+ Toyota Tundra 3.4L Twin Turbo
Up to 60whp / 75 crank hp — gains on a completely stock Tundra on pump gas, even more with bolt-ons, higher octane, or E85 No ECU flash required — piggyback tune that works even with locked 🔒 ECUs, so your factory computer is never modified or flagged Plug-and-play install — simple harness installs as your first and only mod; fully removable and not VIN-locked In-dash map switching — change between factory and performance maps on the fly, with boost-by-gear for better traction JB4 PRO Bluetooth included — wirelessly log data, switch maps, and get free firmware updates from the JB4PRO app Fits gas & hybrid — 2022+ Tundra 3.4L V6 Twin Turbo and 3.4L V6 Hybrid Twin Turbo JB4 Tuner for 2022+ Toyota Tundra 3.4L Twin Turbo Up to 75hp with no ECU flash — the most advanced plug-and-play tune for your Tundra. The Gold Standard in Plug-and-Play Tuning The JB4 is the most advanced and highly-featured tuning system available for your 2022-Present Toyota Tundra 3.4L. Power gains are up to 60hp to the wheels (75hp crank) on a completely stock truck on pump gas — and even higher with bolt-on parts, higher octane, E85 mixtures, or larger turbos. No ECU flash needed, and it's compatible with locked ECUs. The JB4 installs between your truck's sensors and the ECU, manipulating boost, timing, and fueling in real time — a similar effect to an ECU reflash, but without the vehicle ever knowing it's been tuned and without unlocking or flagging your ECU. JB4 PRO Bluetooth — Included Our all-new JB4 PRO smartphone connection is included, wirelessly linking the JB4 to your Bluetooth iOS or Android device. Record and analyze vehicle data, switch performance maps, and update JB4 firmware as we release free newer versions with more powerful maps and new features. The adapter fits fully inside the JB4 enclosure for weather protection and a clean look, and the JB4PRO app includes advanced log-analysis tools to estimate performance and flag any tuning concerns. JB4 Features & Benefits Up to 60hp to the wheels on a stock vehicle (75 crank) Improves 0-60 and quarter-mile times Multiple tuning maps for different fuel types, including E85 support On-the-fly in-dash map switching & boost-by-gear traction control Reads and deletes fault codes; logs up to 40 engine parameters Full CANbus integration; runs as smoothly as stock, no fuel-economy hit in normal driving Not VIN-locked and fully removable; billet aluminum enclosure; 5-year warranty Designed and assembled in the USA Dyno Results Real dyno-proven gains of up to 60hp to the wheels / 75hp at the crank on an otherwise stock Tundra. See It in Action Toyota Tundra Before & After JB4 Hear and feel the difference the JB4 makes on a Gen 3 Tundra. Simple to install, fully reversible, and it transforms the throttle response and pull without touching your factory ECU. 📄 Download the Tundra JB4 Install Guide (PDF) ✅ This Part Fits • 2022+ Toyota Tundra 3.4L V6 Twin Turbo • 2022+ Toyota Tundra 3.4L V6 Hybrid Twin Turbo Select your engine (gas or hybrid) above. Requires 91 octane or better for performance gains. FAQ Do I need to flash my ECU? No. The JB4 is a piggyback tune that works alongside your factory ECU — even locked ones — so nothing is modified or flagged. Is it removable? Yes. It's plug-and-play, not VIN-locked, and can be removed or moved to another vehicle at any time. Does it hurt fuel economy? No impact during normal driving. Performance gains require 91 octane or better. Gas vs. hybrid — which do I pick? Choose the variant that matches your engine: 3.4L V6 Twin Turbo (gas) or 3.4L V6 Hybrid Twin Turbo. Both make the same JB4 gains. Is the Bluetooth adapter included? Yes — the JB4 PRO wireless adapter is included for data logging, map switching, and free firmware updates. What's the warranty? The JB4 carries a 5-year warranty and is designed and assembled in the USA.
3.4L V6 Twin Turbo, 3.4L V6 Hybrid Twin Turbo