[1speedbike]

The dv/charge pipe is honestly fine. I see on here many people upgrade it, but on e90 post I know a hunch of people who say upgrading it is pretty useless unless you're adding it for a meth bung as well. If you're looking for more power, then meth is the way to go for that price. But adding a sway bar and some subframe bushings would be in that price range and help the feel of the car by a good amount.