With gloss UV coated carbon fiber stretching from the front of the engine compartment to the rear it's hard not to be impressed by the sheer volume of carbon. The majority of it comprised of a fully functional secondary air inlet which doubles as an ornate engine cover. As such, signature BMW engine cover design elements signifying the cylinder count are integrated into the design for factory like continuity and a nod to a long history. The cosmetic beauty of the system does not solely derive from the presence of carbon however. The immense central passage also purposefully bisects the engine compartment to ensure the factory bracing, which is impressive on its own, is visible. With both OEM and Dinan elements showcased simultaneously the overall engine bay retains symmetrical harmony and commands attention at all corners.

• 46% increase in filter area (stock: 51in², Dinan: 82in² per side) for optimum flow.
• 86% increase in inlet cross sectional area via the center inlet/scoop (secondary inlet) for maximum airflow.
• Bolt-on installation.
• Carbon Fiber overload – the good kind.
• Center inlet/scoop doubles as a visually pleasing carbon fiber engine cover.
• Improved throttle response.
• Increased sound for aural satisfaction at full load.
• Increased turbo efficiency, reliability, and head room.
• Larger volume air boxes (56% larger than stock) that completely seals allowing an increased volume of air to be utilized.
• More Flow: 10% greater than stock (Stock: 575 CFM, Dinan: 630 CFM @ 30" H2O per bank).