JB4 for 2022+ Toyota Tundra 3.4L Twin Turbo

Power gains of up to 75hp on a stock Tundra without the risks of flashing!

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 car on pump gas, gains with bolt-on parts, higher octane, E85 mixtures, and larger turbos are even higher.

No ECU flash needed and compatible with locked ECUs

The JB4 features a simple plug and play installation harness for easy installation & removal and includes many features not found with any other Tundra tune. Including on the fly in dash map switching between factory and various performance maps, boost limiting by gear for improved traction in lower gears, built-in data logging, built-in code reading, and much more.

Remember the JB4 Tundra tuner does not require any additional modifications or previous stages. Simply install the JB4 as your first and only modification and enjoy an entirely new fast and smooth racing experience. The JB4 also does not require any user setup or customization but for those who are interested in logging, adding new features as we post them, changing maps, etc, we suggest the BMS DATA cable or the Bluetooth mobile phone adapter.

Optional Tundra Front Active Spoiler Delete JB4 add-on available here.
For those running a Tundra JB4 this simple plug and play add-on allows for complete removal of the Tundra Front Active Spoiler module without those annoying error codes. Essential when installing aftermarket front bumpers and some lift kits. Also eliminates the need for the in cabin JB4 OBDII cable allowing full CANbus function from the Active Spoiler CANbus connection point.

Optional JB4 MAP Sensor Bypass Extensionsavailable here.
These plug and play connectors simplify the installation and removal of JB4 and other piggyback systems by allowing you to bypass the difficult to reach upper rear MAP sensor by attaching the connections to each other.

Wirelessly Connect to your JB4:Our all-newJB4 PROsmartphone connec