I run 338rwhp, Shutoboy was 355rwhp in R32s.The highest ive had on the dyno in full time tune not just cranked for a run is 397with R34 Turbos.Jades Blue R33 was 384rwhp running 11.72 in 2003 with Exhaust, 18psi boost and ECU. Steve from Myree Dyno had close to 400rwhp and did speed events for a few years.Many others have lost their turbos at 1 bar.Seems to be luck more than anything but i have never seen any failed R34 turbos.