Unlock additional power and performance with the JB4 tuner
Unlock additional power and performance with the JB4 tuner
Plug & play power — gain up to 60 horsepower on a stock car, 100+ horsepower on a modified car!
Not for sale or use in the state of California.
Plug & play power — gain up to 60 horsepower on a stock car, 100+ horsepower on a modified car! For 2012 and newer vehicles.
Not for sale or use in the state of California.
For Vehicles with Type B Harness & Pneumatic Wastegate only
Plug & play power — gain up to 60 horsepower on a stock car, 100+ horsepower on a modified car! For 2011 model year vehicles.
For Vehicles with Type A Harness & Pneumatic Wastegate only; Not for sale or use in the state of California.
For Vehicles with Type A Harness & Pneumatic Wastegate only
Features CAN-Bus connectivity for more advanced tuning — gain up to 80whp on a stock Supra!
Not for sale or use in the state of California.
Plug & play power — gain up to 60 horsepower on a stock car, 100+ horsepower on a modified car! For 2014 and newer vehicles.
Not for sale or use in the state of California.
For Vehicles with Type B Harness & Electronic Wastegate only
Maintain driveability and reliability while adding up to 60 HP and 45 lb/ft of torque!
Plug & play power — gain up to 50 horsepower on a stock car, 100+ horsepower on a modified car!
For vehicles with pneumatic waste gate; not for sale or use in the state of California.
Plug & play power — gain up to 40 horsepower on a stock car, 70+ horsepower on a modified car!
Not for sale or use in the state of California.
This product was last offered at the strikethrough price on
05-19-2026
Plug & play power — gain up to 40 horsepower in under one minute! 50 state legal performance!
CARB Approved - Legal in All 50 States! CARB certified for sale in all 50 states
Maintain drivability and reliability while adding up to 60HP and 60lb/ft of torque!
Maintain driveability and reliability while adding up to 40 HP and 30 lb/ft of torque!
Plug & play power — gain up to 60 horsepower on a stock car, 100+ horsepower on a modified car!
This product was last offered at the strikethrough price on
05-19-2026
Maintain driveability and reliability while adding up to 40 HP and 55 lb/ft of torque! For 2011 to early 2012 vehicles.
Not for sale or use in the state of California.
For 2011 to early 2012 vehicles with type A TMAP harness only!
Maintain driveability and reliability while adding up to 40 HP and 55 lb/ft of torque! For 2014 and newer vehicles.
Not for sale or use in the state of California.
For 2014 and newer vehicles with type B TMAP harness only!
Gains of up to 45hp and 60lb/ft!
Not for sale or use in the state of California.