The factory airbox restricts maximum airflow to keep induction noise down. Upgrading your induction hardware allows the CEPA or CEPB engine to breathe freely, dramatically improving turbo spool, sharpening throttle response, and amplifying the legendary 5-cylinder intake roar. Ditch the restrictive factory setup with high-volume induction kits to maximise your cold air feed, or choose drop-in high-flow panel filters for a highly effective OEM+ upgrade. Eliminate narrow bottlenecks near the turbocharger by installing enlarged turbo elbows alongside smooth silicone induction pipes & hoses for unrestricted, high-velocity airflow directly into the engine.