WTF means WHAT THE FUCK?!?!??!?! lol, just kidding. Well as far as I know, a naturally aspirated vehicle is a car that doesnt use a turbo system or any type of turbine to pack or jam compressd air in the cylinders because we all know that is what will make the car faster. For someone to have a fast car that doesnt have turbo usually has a big engine like a V8 with 5.0 Liters so it is natually fast without using turbos and/or compressors to make it faster. That's all I know... correct me if im wrong but I dont know much