Dinan semi-open carbon fiber intake system. Replaces the restrictive factory airbox baffling and Helmholtz resonator chambers with a larger-volume carbon fiber airbox and intake tube - roughly 30% more airbox volume and over 30% more filter area than stock - improving throttle response and giving a noticeably stronger turbo induction sound while adding a measurable power gain on an otherwise stock engine.

Fitment: BMW F-chassis turbo models per the vehicle applications listed on this line (confirm exact chassis/engine and CARB-legal status at checkout).