I have x50, cargraphics exhaust, sport filter, 1,2bar flash and uprated clutch. The net result = 530bhp@crank. 560bhp@1 bar or 600bhp@1.2 bar is totally unrealistic. That dyno was busted!

 

I drive an X50 and sought out those cars specifically. It was a pain trying to find a later model X50 in Slate Gray that was local to me, but I paid the premium for it. I knew that I wouldn't want to spend the time or money upgrading my turbos and would probably end up with at most a flash and exhaust for engine mods (whether I got a K16 or K24 car), so I wanted to start with the platform that already had bigger turbos and intercoolers.

I'll echo sentiments about road racing and smaller turbos. The rush and surge when you bury the throttle and pull through the rev range is fun in something bigger, but with the way these cars are geared I'd want instant spool and response when trying to rocket out of corners on a track.