TDI-Tuning develops, produces and distributes performance enhancements for cars, trucks, marine and other significant sectors. TDI-Tuning is located in Chelmsford, in the United Kingdom, and has been developing ECU performance modules for over 10 years. Our tuning boxes release up to 40% extra horsepower and torque, and the CRTD4 module also increases fuel economy by up to 20% typically delivering you extra range per 100km. All individual ECU modules are created on TDI-Tunings certified dyno, tailored to each engine code on the market. Potential Gains: 227kW - 272kW 700Nm - 777Nm The new twin-turbo diesel in the 300 Series is a smooth mill with plenty of rich torque available. The 300 Series is a popular choice for touring, camping and towing - and with extra weight comes the need for more power and responsiveness. Our TDI module will give you an extra 45kW & 77Nm. This module coupled with our Throttle Controller makes the big 300 a different vehicle.