I have a 2010 50th turbo ,even though it suppose to have 270kw not the case ,,,,b4 any work it came in at about 220 at the rear ,,, stock turbo was made bigger 12psi flapper,,60psi injectors,,4inch dump into a 4inch system,turbo back 1000 cell cat, 40 walbro in tank pump, f6 intercooler ,herrod pipping ,herrod cold intake ,with 3 tunes sct now has 309 at rear can go bigger but better to be safe than sorry can get upto 400 at the rear with mods,,,, but not safe with out more work to internals But has enough to scare some one ,,,So with a few grand can achive what u want but where do you stop ,,,sorry in advance for grammer no good at it cheers ,,, all has been custom tuned by auto tech