VR Tuned ECU Flash Tune Mercedes CLS400D 340hp C257 2018-2020

The Mercedes-Benz CLS 400 D - 340hp ECU flash is available from VR Tuned. With ECU flashing not only do you gain horsepower and torque, driving characteristics are vastly improved giving you improved throttle response and better driveability.

Crank Horsepower Ratings:

• Stock Power 340hp | 516ft/lbs
• Tuned Power 410hp | 619ft/lbs

What are the benefits of VR Tuned?

• #1 priority is our customer service to you!
• Our tuning is used worldwide. We have powered vehicles of all types.
• All ECU tunes can be reverted back to stock if necessary.
• With the VR Tuned ECU Flash, basic bolt-on performance parts will not require a retune of your ECU.
• Adding parts such as an exhaust, intake, plenum, pulley, will all adjust with the tune.
• For gasoline vehicles, if you add higher octane fuel, the ECU will adjust accordingly.
• We can tune cars worldwide including JDM, EU, Australian, and USA cars for different types of octane or environments.
• Other custom enhancements are available if requested and applicable.
• We test and dyno tune on our own cars to make sure what you get is safe, reliable, and gives you the results you want!

How to Flash Your ECU?

• We can bench flash the ECU. To bench flash the ECU, you must remove it from your vehicle and send it to us. Once we receive the ECU, we will prepare the tune file and then ship it back to you for reinstallation. We do not solder or modify the ECU board at all.

For reference, this ECU is a Bosch MD1CP001.