140kw on 13psi gt28r stock t28 with ems 4424 bigport cams 3" zorst. Soon to get tuned for 16psi so ill update it later. Recommend going for brand new turbo as ive been thru 3 t28's and all had problems. Ive got a gt28r hiflow to gt28rs spec "disco potato" from Hypergear. I highly recommend them for the atr28 or even there Hi flow service.