I want to do this upgrade too, but I don't even have 1000 miles on the car. Is it imperative to have a tune? Change the plugs? Upgrade the intercooler? (with the sc pulley) I would think (don't dare assume) they are only necessary for people that live in the higher rpm's, where I just do an occasional burst of max acceleration. And perhaps I'll take the xfire to the track every now and then for kicks and giggles. I doubt I'll be at high boost every day. Hummm. Anyone wish to opine?

Les