We are increasing engine power by modifying the software on your computer by controlling its work. Modern internal combustion engines are steerable through electronic systems which have replaced mechanical systems, or air offering more precise control over all operating parameters.
It is no longer a central computer and the entire network composed of sensors, drivers, engine, gearbox, traction control, ABS, etc..
These modules communicate with each other and continuously based on data obtained from the sensors determine the optimal settings for the mechanical components. Optimal according to the manufacturer but not necessarily by the user, hence the frequent need to modify the operating parameters of the engine or is it a different system. Require changes in the software in the module that supports the system. https://autochip.hu