S 420/450 CDI (320 HP/ 235 kW)

We developed RaceChip XLR5 to increase responsiveness on the road. Our innovative throttle tuning system lets tune your engines reactions to your taste choose from 7 separate stages. You will love your cars improved dynamics we promise.Your engines...

Torque Increase (NM):150Economy Gain (MPG):20Power Gain (PS):79Performance UpgradeMore power, greater torque, superb mid-range punch, stronger acceleration and quicker responses: you’ll love the new characteristics RaceChip chip tuning will give...

Torque Increase (NM):150Economy Gain (MPG):20Power Gain (PS):79Performance UpgradeMore power, greater torque, superb mid-range punch, stronger acceleration and quicker responses: you’ll love the new characteristics RaceChip chip tuning will give...

We developed RaceChip XLR5 to increase responsiveness on the road. Our innovative throttle tuning system lets tune your engines reactions to your taste choose from 7 separate stages. You will love your cars improved dynamics we promise.Your engines...

The optional controller allows complete control of the RaceChip XLR5 directly on the dashboard. Thanks to the Bluetooth connection to the XLR5, the controller is wireless and can be easily placed within the driver's reach. Additionally, the integrated...

Torque Increase (NM):126Economy Gain (MPG):15Power Gain (PS):63RaceChip RS Tuning Box - Bluetooth Version with App ControlThe bestseller of the RaceChip tuning boxes. Completely newly developed optimisation software with engine-specific tuning,...

Torque Increase (NM):126Economy Gain (MPG):15Power Gain (PS):63RaceChip RS Tuning Box - Non Bluetooth VersionThe bestseller of the RaceChip tuning boxes. Completely newly developed optimisation software with engine-specific tuning, high-quality hardware...