DINAN COLD AIR INTAKE - 1999-2003 BMW 540I a90 supra Twin exhaust valves are a

Twin exhaust valves are a whopping 76mm diameter

The F10 M5 Dinan high flow carbon fiber cold air intake

Inlet piping diameter is maximized from the 4” filter all the way to the turbocharger

Larger volume air box (60% larger than stock)

2012–2015 F30 316i

DINAN COLD AIR INTAKE - 1999-2003 BMW 540I a90 supra Twin exhaust valves are aDinan High Flow Cold Air Intake Systems develop horsepower and torque gains by improving the engine's intake airflow. The aggressive system design provides for a less restrictive intake airflow than the stock system for greater engine efficiency and the lowest possible intake air temperatures. The Intake Systems replace the factory air box with a cylindrical performance filter and carbon fiber intake pipe. The filter is relocated to a separate