Want more power, torque or economy from your vehicle? With the TDI Tuning App, you can decide directly from your driver’s seat. Connect to your TDI-Tuning Bluetooth system to instantly change the performance of your engine and adapt your vehicle to suit any situation.
Join a community of like-minded tuners, show-off your vehicle, and get tips from a world-wide network of car enthusiasts.

Functionality:
- Connect to your CRTD4 Bluetooth or CRTD4 SENT Bluetooth enabled system.
- Instantly change the performance setting of your vehicle from one of seven custom programs specifically designed for your exact vehicle.
- Set your engine delay timer to activate your system after a pre-determined amount of time.
- Discreet mode- turn off all illumination on your tuning system.
- Turn off your tuning system and revert back to vehicle factory standard.
- Connect with our TDI-Tuning Community.
- Instantly access our support and FAQ pages.