Agree With sportbikeryder, definitely make 400 HP. My experience, owning a running.... / daily ridden turbo bike, not conjecture........ with a GT35 r Duel ball Bering turbo from RCC. w/no intercooler, 283hp on pump gas. I only make big HP on alternate fuel, and tune. Would want good internals if pushing that power on any regular basis. Boost starts building pretty quick around 4600rpm, and without intercooler, you cant just keep making high speed passes, or street runs back to back without some cooling down.