Adjustable Box Instructions

Do not put anything on J1 or J2. These are for programming the chip which is protected and will unload all programming and make the box never work again. Tampering with these jumpers will void your warranty. The truck must be shut off when removing or relocating jumpers. The truck reads the program upon start up. “Fuel Added” means percentage of fuel added. 15% adds about 20% more horse power and torque, 30% adds about 35% more horsepower and torque.