The Blox one-piece cast aluminum intake manifold will improve your engine's overall flow characteristics compared to the factory unit. Using the latest in casting technology reduces its overall weight and makes the Blox manifold the lightest in the industry. Each application has been designed using a larger plenum and longer intake runners, then tuned for peak power at high RPM. Blox intake manifolds are ideal for naturally-aspirated or forced induction applications. All factory sensors and throttle body are utilized, while recessed bolt holes make for a simple installation. Applications are currently available for Honda DOHC 1.6-1.8L VTEC and non-VTEC engines. CARB-EO pending. Other applications coming soon for Honda D-series (SOHC), K-series (DOHC-iVTEC)