my stock xr6 turbo made 249.91 rwkw, 335hp last week marky boy,yours an F6 ya mad monkey !, RDP tuned this week and ran 408 but pulled timing to make safe at 300.6rwkw, 403rwhp, power isd very smooth and linear but could be much better with decent exhaust ! venom cat fitted but rattling like a mofo from brand new, less than 20 mins fitted. crap ! Going to replace whole system, turbo and injectors when funds allow.