i recently got a 2008 tsx as my first car and i want to deepen the sound of the exhaust but since it isn't technically mine i can't put whatever upgrades i want.
i have looked at performance mufflers (especially flow master) and performance resonator upgrade but i have no idea where to go.
looking around a few hundred bucks max, no $1000 new exhaust systems
so my question is what is the best way to deepen the sound of my 4 cylinder tsx without making it much louder.