my friend has an fx35 and i was following him one day on the highway and i loved the way his car sounds. the sound shows that is has power but it doesnt sound like an obnoxious loud muscle car that you get from a high performance exhaust kit. what modification is done to these cars to give it that sound?

there are three main mods you can do to affect the sound, and in order, from greatest change to least 1. exhaust, 2. headers, 3. intake