E60 / E61 (2004 - 2010)
My friend thought it would be cool to single/dual my 2008 550i, but looking inside my engine bay... it looks like there's close to no room at all even to put even a single turbo in it. If anyone out there has an E60 5 series that's turbo'd (turbo'd well, not just shoving it in a corner) to let...