So I am thinking about buying a 2011 X5 5.0 TT. Anyone have experience with this model and are there sufficient upgrades available, e. g., increase horse by 50+? I would assume this is available since power gains on a turbo vehicle are easier to achieve via chips, exhaust and possible turbo upgrades. I would like to get some reasonable power gains for the price. If cost end up close to buying a 2011 X5M then the X5M would be my option.

Thanks for your input/thoughts.

BTW, I currently own a 2005 X5 4.4 (w/sport package) and love it.