About TDI Tuning: 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. Did you know? Your engine is producing 20-40% less power than it is naturally capable of. Almost all manufacturers develop one engine and limit it electronically to comply with worldwide regulations, fuel grades, climate etc. This means your engine has much more to offer in terms of power and economy. TDI Tuning has been developing pioneering solutions to this issue for over 10 years. Our tuning boxes release this natural power and are designed to be used by the every-day driver, offering incredible gains with zero risk to your vehicle. Potential Gains: 180kW - 221kW 380Nm - 445Nm