As I plan to get 600whp on my r53 with stock Internals and two ebay electric superchargers to give me 97psi of boost I think I need to buy one of these spoilers to help keep me on the road. I've got the traction covered by fitting some super sticky Chaoyang Tires which stick like shit to a blanket and only £33 each off ebay, next thing to get is a dump valve so all my mates will be amazed at how quick it sounds.