The speed limiter is again managed by the same two modules and once again we need to have in mind that the CPC has pre-defined values for that too and we can reach the maximum so do not expect 330 km/h+ from the same C180 from the example above. Let us take the C217 C63 AMG as an example – the earlier version, equipped with a 5.5 litre twin turbocharged engine can reach a maximum speed of 310 km/h in “de-restricted” form while the facelifted model (4.0 litre twin turbocharged) is forced to make due with just 300 km/h. Both are a great improvement over the stock 251 km/h. To make the desired changes, you can follow the steps below:
- Enter the diagnostics screen and do a Scan
- Enter the ECU
- Enter the Smart Functions menu and set the limit values:
- You can also make the changes in the CPC unit (CPC_NG):
