Today our premium partner has set us the task: on a Renault Master 2.3dCi car running Bosch EDC17C42, it is necessary to turn off the diesel particulate filter regeneration system and make good chiptuning. The car has very low power characteristics for freight vehicles. We studied the complete set of the engine, studied the modes of operation of the turbine, the performance of the nozzles. As a result, we performed optimization of the injection angles, the ratio of fuel and air, removed the restrictions on fuel injection and boost, increased the boost pressure in the medium and maximum load modes. As a result, the car has a +24% increase in power.