The intake manifold with dual-flow distributor pipe has an adjustment valve which closes and opens at set engine speeds. A two-stage tuning effect creates oscillation of the air mass in the intake system, which in turn generates a turbocharging effect and optimises induction.

These two effects combine to produce higher torque at low engine speeds, a flatter torque curve, and increased power output at high engine speeds. The acoustic properties of the system are second to none, producing the characteristic Boxster sound.