Dinan 99-03 BMW 540i Cold Air Intake

Dinan 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 compartment behind the front bumper and below the headlights in order to insulate it from engine compartment heat and maximize exposure to outside air. The filter to airflow meter pipe is designed to minimize air turbulence and maximize efficiency.

• Filter re-located to maximize exposure to cooler, oxygen rich, outside air.
• Optimized 4” diameter carbon fiber tube ensuring minimal turbulence.
• Uses a larger cylindrical performance filter for increased flow.
• Updated logo for long lasting durability and aesthetic appeal.
• More Power: + 18 HP, + 20 LB-FT (coupled w/ engine software).
• 50 State Emissions Legal: CARB EO D-176-27.
• Improved throttle response.