Ok, stupid but serious question guys...I've been arguing with my friend over this forever now...I'm not great with technical stuff, I just drive...So, you can see my car below and the mods done to it, with an E-303 Cam...When I race my car on the streets I shift at about 4500, which seems plenty high enough to me, but not to my friend...He says I should be shifting at least at 5500 when racing, although by the way my engine sounds and by my tac needle slowing down 5500 seems way too high...Am I crazy or should I be shifting that high or higher?? Call me an idiot, but I need the answer to this!