Our devices are equipped with the regulating screw. Thanks to it you can adjust the device to your car. DO NOT begin adjusting before 200 km / 150 miles is done. If, after this distance, there is still no increase in power, you can improve it by turning the screw few times to the MAX. As the direction depends on the manner of connection, please compare the chip with the picture in the instruction and turn the screw few times to the MAX (according to the picture).