Mercedes C250CDI in with us for a stage 1 CustomPro ecu tune. Despite the fact this vehicle produced way more than the factory claimed, it still didn't stop us from seeing increases on our software. The peak to peak gains weren't huge on this one, however we have produced consistent gains throughout the full rev range from 1,850rpm onwards, which makes the vehicle better to drive on a day to day basis. 

Before: 224hp/501nm

After: 235hp/553nm

Of course using PPE on the car and sticking to social distancing guidelines