This is a question that I've got since many years but was too lazy to ask...When I search for a tune for a car I often see tunes with stats waaaaay beyond what's possible to achieve for me in the custom upgrade menu for. For example when I try to increase the power of my Ferrari F40 Competizione I can't really increase it beyond 550KW (which is the stock power) or whatever that is in BHP, no matter what upgrades I choose in the menu. But a glance at other people's tunes I see the exact same car with 888KW...which makes me think there must be some additional upgrades which I don't have access to. But I'm probably wrong and I really don't know how they can do that.