Thanks to its compact design, our tuning box can be fitted directly under the engine cover of your CLS 300 D EQ Boost with 265 hp. This reduces the installation effort and provides effective protection from prying eyes.

Most competitor products rely on a separation of device and wiring harness. On the one hand, this creates the problem that it is difficult to find a suitable mounting position for these devices. On the other hand, when the hood is opened, the specialist immediately recognizes that the vehicle owner has tampered with the engine.

The micro chip tuner is so small that it can be mounted directly under the engine cover. Thanks to the simple installation, the device can be removed at will or is not visible in case of doubt.

FAQ for the Mercedes CLS-Klasse (C257)

1. how long does the optimization take?
As a rule, you will need a maximum of 10 minutes for the installation.
2. can the chip tuning be reversed?
Yes, our small tuning box is 100% reversible and leaves no entry in the engine control unit. After removal, everything is back to standard.
3. how much horsepower will my CLS 300 D EQ Boost 265 hp engine get?
With our tuning box, your engine will have an output of: 290 hp and 605 Nm.
4. is even more power possible?
The tuning box is already perfectly tuned for your engine, so we can guarantee engine durability.
5. how long will my engine last?
We have converted cabs that have driven more than 1 million km with our box. (assuming regular maintenance)