Your vehicles may show fuel change as normal road performance. These changes generally provide more fuel consumption in the city and less fuel consumption on long journeys. Since the stop-and-go ratio of the vehicles on the long road is less, there is less consumption. This rate may increase in vehicles with low HP (horsepower). In vehicles with low HP, high power is required according to the weight of the vehicle during take-off. In this case, the vehicle may increase fuel consumption. For this reason, chiptuning operations are performed in vehicles. The operations performed are generally programming directly to the vehicle ECU. Thanks to this programming, the vehicle HP can be upgraded to the desired level. Thanks to this upgrade, the ratio between the power displayed by the vehicle at the time of take-off and the fuel decreases.