Cutting Edge Tuning Technology
The CRTD4® QUAD-Channel Petrol Tuning Box for the Audi S7 4.0 TFSI Quattro 414 BHP / 420 PS / 309 KW / 550 NM / 406 LBFT from TDI-Tuning is at the cutting edge of digital tuning box technology and represents a revolution in vehicle remapping. With custom designed and engineered micro-processor architecture the CRTD4® Quad-Channel remaps vehicle performance moment to moment based on data received via the engine sensor interface harness. The engine fuelling profile of the vehicle is then altered to improve power and torque delivery whilst eliminating flat spots in individual gear acceleration arcs producing a smoother and more responsive drive experience.
A Revolution In Turbo Petrol Tuning
For domestic vehicle owners, the CRTD4® Quad-Channel represents great value with its seven operation mode settings, allowing owners to adjust power and torque output between maximum economy and maximum power, perfect for switching between everyday driving and long-haul trips. Our CRTD4® range of products can also be reprogrammed for use in over 90% of other turbo Diesel and Petrol vehicles, meaning you can change your vehicle often as you want safe in the knowledge your CRTD4® can likely be used again.