Category Chiptuning
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Tuning example Bosch MED17.7.2 – Daimler - 2.0l petrol

  • Description

The Mercedes-Benz GLC250 is equipped with a 2.0l turbo petrol engine with 115 kW of maximum power, all-wheel drive and 9-speed automatic transmission.

  • Bosch MED17.7.2
  • 2.0l turbo petrol engine
  • Mercedes-Benz GLC250 4MATIC, 2016


The Mercedes-Benz GLC250 has a strong, sporty character, both in style and performance. Alientech has developed a successful procedure that reaches a substantial improvement in torque production, revealing its true potential.

This practical example is suited for the needs of both amateur and professional tuners: chose whether to follow the step-by-step tuning procedure through the ECM Titanium software or to improve your knowledge by integrating this example with your experience!

What’s in this example?

To guide you through this path, in the first part, you’ll be shown extensively detailed information regarding the vehicle in question, the engine, and the control unit; in addition to the structure of the original file and the communication, modes to connect the vehicle to Alientech’s tools. Lastly, you’ll have access to the results of both performance and diagnostic tests.

In little more than 25 minutes, you’ll learn a set of information that will allow you to broaden your offer because it applies to other Daimler -group vehicles.

It doesn’t matter if you are a beginner or expert tuner: the information contained in this practical example will be equally valuable to you. The former will immediately be able to modify a vehicle with extraordinary performance, the latter will be given a good starting point to develop your personalized modified file

Compatible vehicles with the same engine, ECU, and maximum power:

Model name Engine size Generation
GLC   250 4MATIC (X/C 253) 2,0L   -> 1991cc 1   (MY2015)
GLK   250 (X 204) 2,0L   -> 1991cc 2   facelift   (MY2012)
C   250 (W/S 205) 2,0L   -> 1991cc 4 (MY2014)
C   350 e (W/S 205) 2,0L   -> 1991cc 4 (MY2014)
E   250 (W/S 212) 2,0L   -> 1991cc 6 (MY2013)
E   250 (W/S 213) 2,0L   -> 1991cc 7 (MY2016)
CLA   250 (C 117) 2,0L   -> 1991cc 1 (MY2013)
GLA   250 (X 156) 2,0L   -> 1991cc 1 (MY2013)
A   250 (W 176) 2,0L   -> 1991cc 3 (MY2013)
B   250 (W 246) 2,0L   -> 1991cc 2 (MY2011)
SLC   250 (R 172) 2,0L   -> 1991cc 1 (MY2015)
Metris   (W/V 447) 2,0L   -> 1991cc 1 (MY2015)


Compatible vehicles with the same engine, ECU, but different maximum power:

Model name Engine model Nominal power
B   220 4MATIC (X 246) M270   DE 20 LA 135kW
A   220 4MATIC (W 176) M270   DE 20 LA 135kW
SLC   200 (R 172) M270   DE 20 LA 135kW
GLK   200 (X 204) M270   DE 20 LA 135kW
C   200 (W/S 205) M270   DE 20 LA 135kW
E   200 (C/A 207) M270   DE 20 LA 135kW
E   200 (W/S 212) M270   DE 20 LA 135kW
E   200 (W/S 213) M270   DE 20 LA 135kW
C   300 (W 205) M270   DE 20 LA 180kW
SLC   300 (R 172) M270   DE 20 LA 180kW
E 300 (W/S 213) M270 DE 20 LA 180kW
GLC   300 4MATIC (X/C 253) M270   DE 20 LA 180kW
Infiniti Q30s M270 DE 20 LA 135kW
Infiniti   Q50 M270   DE 20 LA 155kW


Join immediately the Alientech Academy world with this remapping procedure!


A tuning practical example lasting around 25 minutes, composed of 3 sections:

First section:

in this part of the tuning practice, we will describe the characteristics of the vehicle by listing version, equipment, year of production, traction, and type of gearbox. Then, we indicate all the vehicles – even of different car manufacturers – equipped with the same engine or similar version; immediately after, the specifications of the engine control unit will be specified in detail: that is the identification data and the versions for the emission classes. In addition, we talk about the types of connection with Alientech tools – which are useful for the remapping – by indicating the protocols of use, the available functions, and giving some practical advice for editing operations. Finally, the structure of the original file is presented by indicating the addresses and the various areas.

Second section:

this part directly addresses the remapping practice. After a brief introduction, we present the summary list of the maps that will be modified, the Alientech modification method, and its specific application to the vehicle in question. Following the wizard of this practical example, you will be able to create a mapping that will ensure high performance and guaranteed reliability.

Third section:

this last part is dedicated to the discovery of the potentialities of this remapping practice: the new increases, compared to the original settings of the vehicle in a precise and detailed chart, clarify efficaciously how this remapping practice is effective and surprising.