02' 330ci... Basically stock. Minor intake work, but stock otherwise under the hood. The Exhaust setup is basically a muffler delete with a res tube after the rear axle bend. Dual pipe into a 3 inch all the way to the tips and a smaller res pipe. Sounds much better in person than it does on video, especially from a still picture camera "video" setting. The Exhaust is the same setup as the BMW 135i AFE cat back Exhaust.