Originally posted by EMPOWERD
Getting good grasshopper... couldn't have said it better myself. Bump up the fuel pressure with a B&M adjustable fuel regulator and get a Cartech/Vortech FMU. You might have to upgrade your intank fuel pump to a (so I hear) E28 535i pump. Stock injectors will probably be okay if you don't run over 7psi.
so how much psi do i need to run to get 220rwhp?