Sounds kinda like a Mac catback.
Mods: No Engine mods besides cold air intake
OP, I see an idler pulley and the cap missing from the supercharger pulley. This indicates that the engine was pullied at some point. Was it like that when you bought the car?
Someone looking to buy this car should have the A/F ratio checked to be on the safe side.
Sounds kinda like a Mac catback.
Are those aftermarket headlights? ?HID?