Dinan High Flow Cold Air Intake System

The Dinan High Flow Cold Air Intake System is a precision-engineered induction upgrade developed by America's foremost BMW performance tuning specialists. Purpose-built to overcome the airflow limitations of restrictive factory induction systems, each intake in this product line delivers measurable gains in horsepower, torque, and throttle response — while retaining the drivability and refinement that define the BMW driving experience.

Engineered for Maximum Airflow:

At the core of every Dinan intake system is a commitment to reducing induction restriction and delivering the coldest, densest air possible to the engine. High-flow filter elements and optimized airflow paths provide significantly less restriction than the OEM setup, improving overall engine efficiency and allowing both naturally aspirated and turbocharged engines to breathe more freely across the entire powerband. Select configurations incorporate secondary intake ducting that draws additional cool, oxygen-rich air from outside the engine bay — further improving performance as vehicle speed increases.

Key Features:

• High-flow filter element delivers increased airflow capacity over restrictive factory designs
• Optimized intake geometry minimizes air turbulence and maximizes flow efficiency throughout the powerband
• Sealed and semi-open configurations available across the product line to suit varying performance goals
• Premium construction materials — including carbon fiber options on select applications — engineered to resist heat soak and ensure long-term durability
• Precision O-ring airbox sealing on applicable fitments for maximum pressurization and thermal insulation against heat-soaking
• Precision bolt-on fitment using factory mounting points for straightforward, no-modification installation
• Improved throttle response and induction efficiency from idle through redline
• Seamless integration with factory engine management systems — no additional tuning required on most applications
• CARB Executive Order (EO) certification on select fitments, ensuring emissions compliance in all 50 states

Premium Construction, Proven Results:

Dinan intake systems are constructed from premium materials including injection-molded composites and carbon fiber, chosen specifically for their ability to resist power-robbing underhood heat. Optimized intake tubing and air mass meter housings further reduce restriction for consistent, repeatable performance gains. On applicable fitments, the intake filter is repositioned to maximize exposure to cooler outside air and minimize the effects of engine bay heat soak — a key factor in maintaining consistent power delivery under varying driving conditions.

Backed by Dinan's Legacy of BMW Engineering:

With decades of BMW-focused engineering expertise, Dinan stands behind every intake system with a 4-year/50,000-mile warranty. Each system in this product line represents a proven, reliable foundation for enthusiasts seeking improved engine responsiveness, enhanced induction efficiency, and a more engaging driving experience — without compromising the reliability or character of their vehicle. Select fitments also qualify toward the exclusive Dinan Badge of Achievement program.