The Cayenne Turbo S comes equipped with a larger 82mm throttle body. The IPD Plenum fits this larger throttle body and delivers an additional 30+ horsepower and 32+ foot pounds of torque providing your Cayenne Turbo S with an improved boost in engine power and driving performance. The superior design of the IPD Cayenne Turbo S plenum not only increases power but also improves boost response creating a longer, stronger, more linear and of course more pleasurable power curve. The Turbo S Plenum has been specially machined to accept the larger factory 82mm throttle body. The 957 Turbo S utilizes the factory throttle body and hardware making installation quick and easy although IPD strongly recommends a qualified Porsche technician perform any Plenum installs.