Mercedes S-Class (W221) S420 CDI 2006-2009 3996cc 235kW 730Nm Chiptuning & Powerboxen

Chiptuning

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More products suitable for your vehicle.

Map Optimization with Custom Software

At CPA Chiptuning, you always receive software that is precisely tailored to your engine and vehicle. This eliminates the need for further adjustments. As a result, your engine's performance reserves can be utilized more effectively without compromising longevity. With digital map optimization, tuning data is adjusted in real time.

Easy Installation of the PowerBox

1.

Open the hood.

2.

Remove the engine cover. In most cases, the cover is clipped on and can be easily removed by pulling.

3.

Locate the vehicle's connector plug. Can't find it? Send us a picture of the engine bay to technik@cpa-chiptuning.de and include your order number.

4.

Disconnect the original plug and connect the supplied CPA wiring harness to both original plugs. Make sure the plug is securely connected.

5.

Connect the CPA PowerBox to the corresponding plug (CPA-Plug) on the wiring harness.

6.

Secure the PowerBox and wiring harness in a suitable location using cable ties (away from heat sources and moving parts).

Chiptuning: Complex Technology. Simple Installation. Big Impact.

What is still commonly referred to as chiptuning today has long evolved beyond "simple" chiptuning at CPA. Instead, it involves complex algorithms whose software is developed by engineers and combined with the applied expertise of our experienced technicians, resulting in a performance boost tailored specifically to your vehicle.

The harmony between hardware and vehicle-specific software is the top priority. This ensures that, as a customer, you receive the best possible performance enhancement from CPA.

Our goal: Maximum performance and maximum safety—perfectly united for your vehicle!

Annotations

The following provides additional information, explanations, and notes on the points mentioned in the text in the form of annotations. These annotations are marked with an asterisk (*) and begin here:

* For a detailed overview of the warranty conditions, including specific information on the engine warranty, please click here!