At the wheels.
For reference on a very safe tune with an HKS2530, fuel pump, injectors, AFM etc on a relatively good condition RB20 at 14psi bleeding down to 12 I got 175kw-180kw on a 33c degree day. Pulled 195kw at 16psi with massive misfires due to coils.
Could be a freak engine but its hard to imagine getting that much power out of a standard turbo.