Your friend is absolutely right. Chip tuning involves modifying the engine's control unit (ECU) software to optimize various parameters such as fuel injection, ignition timing, and turbo boost. I encourage you to visit ecutools
and explore the possibilities they offer for your car's chip tuning. With the help of the devices you will find there, you can improve your engine's operational characteristics, so you can experience a more dynamic driving experience without altering its mechanical design.