"The powerplant is the RB25DET as introduced in the R33 GTS25T. In R34 form, however, the engine is upgraded to more environmentally friendly 'NEO' specs. The NEO RB25DET also features a hot-wire airflow meter, 9.0:1 static compression, air-to-air intercooler, ceramic turbine roller-bearing turbocharger, blow-off valve and variable inlet cam timing. With manifold boost pressure of around 60 - 70 kPa (as shown on the factory boost gauge) the R34 25GTt is listed at 206kW at 6400 and 343Nm at 3200 rpm. The R34 25GTt scores its extra power over previous models thanks to a larger turbo (providing a healthier amount of boost), better intercooler, an improved exhaust system and engine management updates."