CF hoods look cool, but do they real improve performance that much? I can understand that they lower the weight of your car, but man I think I could just take the spare and other junk out of my car and acheive the same effect. Does anybody know how drastically they effect performance?

I would consider it more if somehow the cf hood helped release hot air from the engine bay and cooled it off. In fact, better yet, just drive w/o a hood!