ChipWerke Performance Chip Tuning For All Toyota D4D Diesel Vehicles ChipWerke is a next generation, stealth, plug-in performance solution that CANNOT BE DETECTED by car dealerships. It leaves no traces or flags on your ECU and will NOT void your manufacturers warranty. Gain up to 40% MORE HORSEPOWER, 35% more torque and increase fuel economy by up to 15%. We use original OEM plugs. This means there is no wire splicing, cutting or drilling required. NO MECHANIC EXPERIENCE NECESSARY!! It can be installed and removed by the customer in minutes. ChipWerke runs custom software on an actual microchip inside the module. Once you send us the year, model & engine size of your vehicle, it is developed and CUSTOM PROGRAMMED specifically for you. Includes 14-day MONEY BACK GUARANTEE and 2-year product warranty so you can buy with absolute confidence.