Connect with
your vehicle

Smartphone displaying the TDI Tuning app, shown with TDI Tuning CRTD4 tuning system

The UK’s leading tuning system just got better! Now with Bluetooth capabilities the CRTD4 system brings the benefits of tuning to your fingertips.

Connect to your tuning system and control the performance of your engine from the comfort of your driver’s seat.

Download the app from the App Store or Google Play Store:

Download on the App Store
Download on the Google Play Store

Section product-bluetooth settings

7 custom settings

Your CRTD4 tuning system comes pre-loaded with 7 performance maps, engineered specifically for your vehicle. Ranging from 1 – 7, you can instantly adapt your vehicle to suit your drive.

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Section product-bluetooth features

Standout features

1

Adjust

Select your performance setting from the comfort of your driver’s seat and enjoy the full benefits of control.

2

Power

Turn the system on and off from the driver’s seat and activate discreet mode which will turn off the CRTD4’s LED lights.

3

Warm-up timer

For cold starts you can activate a warm-up timer that will allow your engine to reach an optimal temperature before you fully explore its power limits.

4

Connect

Connect with other tuners on our social networks. Share photos of your car, journeys, or pose questions to tuners all over the world.

  • Adjust

    Select your performance setting from the comfort of your driver’s seat and enjoy the full benefits of control.

  • Power

    Turn the system on and off from the driver’s seat and activate discreet mode which will turn off the CRTD4’s LED lights.

  • Warm-up timer

    For cold starts you can activate a warm-up timer that will allow your engine to reach an optimal temperature before you fully explore its power limits.

  • Connect

    Connect with other tuners on our social networks. Share photos of your car, journeys, or pose questions to tuners all over the world.

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Find your
tuning system