Dinan 20-26 BMW M340i/M440i (G20/G22/G23/G26)/22-26 BMW M240i (G42) Cold Air Intake

To achieve the gains in flow that set the Dinan intake system apart, the entire lower box of the system, and not just the lid, has been reworked and enlarged to make use of as much of the available real estate as possible within the engine bay. In turn, this allows a 40% larger, custom, free flowing filter to be housed within and maximum flow to be realized. However, a secondary inlet has always been desired by Dinan in order to effectively fill the volume of the enlarged air box and increased filter surface area. This desire led to a multitude of experiments being conducted on the effectiveness of a possible open-air inlet in the system. With different shapes, locations, and sizes of openings being tested, the goal was to ensure that the added secondary inlet did not cause any unwarranted side effects such as an increase in air temps in the system. This is commonplace with open-air intake systems where overheated engine bay air is employed in the intake tract. The results of these tests showed that the patterned openings present in the final iteration of the box located on the opposite side from the engine provided a perfect balance of additional volume to assist the factory inlet all the while not causing an increase in turbo inlet temperatures. This was the case regardless of testing conditions (single/multiple gear pulls, constant speed, 0-100mph runs, etc.). PEX - G20/G22/G23/G26/G42

• More Power: Max gains of 9 WHP and 8 lb-ft of torque on a completely stock vehicle
• 40% increase in filter area (stock: 82 in², Dinan: 115 in²) for optimum flow
• Compatible with all G2x Mx40i's with and without factory bracing
• High heat deflection PEX construction and an OEM look
• Larger volume air box (60% larger than stock)
• Outflows factory intake by 58% or more
• Enjoyably louder, sportier sound
• Quick and easy installation
• Improved throttle response

Enhance your BMW's performance with the Dinan 20-26 BMW M340i/M440i Cold Air Intake System, designed for models including G20, G22, G23, G26, and G42 chassis. This high-performance intake features a reworked and enlarged lower air box that maximizes available space within the engine bay, allowing for a 40% larger, custom, free-flowing filter that significantly improves airflow and power delivery. The innovative design outflows the stock intake by 58% or more, providing an increase in horsepower and torque, with maximum gains of up to 9 wheel horsepower and 8 lb-ft of torque on a completely stock vehicle. The intake system's larger volume air box, which is 60% bigger than the factory unit, promotes better air intake efficiency, contributing to quicker throttle responses and a sportier engine sound.
The system incorporates a secondary inlet with patterned openings positioned on the opposite side from the engine, carefully tested to ensure optimal airflow without increasing turbo inlet temperatures, even during high-demand driving conditions such as high-speed runs and multiple gear pulls. Constructed from high heat deflection PEX material and designed to maintain an OEM look, this intake system combines durability with aesthetic appeal. Its installation process is straightforward, making it an ideal upgrade for enthusiasts seeking to improve their vehicle’s performance and sound without extensive modifications.
Compatible with all G2x Mx40i models, whether equipped with factory bracing or not, this intake provides a noticeable improvement in throttle response, airflow, and overall engine efficiency. Whether you're aiming for increased power, enhanced sound, or a more responsive driving experience, the Dinan Cold Air Intake System offers a reliable and effective upgrade for your BMW M340i or M440i.

Features:

• More Power: Max gains of 9 WHP and 8 lb-ft of torque on a stock vehicle

• 40% increase in filter area (stock: 82 in², Dinan: 115 in²) for optimal airflow

• Compatible with all G2x Mx40i models with or without factory bracing

• High heat deflection PEX construction with an OEM appearance

• Larger volume air box, 60% bigger than stock

• Outflows factory intake by 58% or more

• Sportier, louder engine sound

• Quick and easy installation

• Enhanced throttle response

Fitment:
BMW M240i Base 2023
BMW M240i Base 2024
BMW M240i Base 2025
BMW M240i Base 2026
BMW M240i xDrive Base 2022
BMW M240i xDrive Base 2023
BMW M240i xDrive Base 2024
BMW M240i xDrive Base 2025
BMW M240i xDrive Base 2026
BMW M340i Base 2020
BMW M340i Base 2021
BMW M340i Base 2022
BMW M340i Base 2023
BMW M340i Base 2024
BMW M340i Base 2025
BMW M340i Base 2026
BMW M340i xDrive Base 2020
BMW M340i xDrive Base 2021
BMW M340i xDrive Base 2022
BMW M340i xDrive Base 2023
BMW M340i xDrive Base 2024
BMW M340i xDrive Base 2025
BMW M340i xDrive Base 2026
BMW M440i Base 2021
BMW M440i Base 2022
BMW M440i Base 2023
BMW M440i Base 2024
BMW M440i Base 2025
BMW M440i Base 2026
BMW M440i Gran Coupe Base 2022
BMW M440i Gran Coupe Base 2023
BMW M440i Gran Coupe Base 2024
BMW M440i Gran Coupe Base 2025
BMW M440i Gran Coupe Base 2026
BMW M440i xDrive Base 2021
BMW M440i xDrive Base 2022
BMW M440i xDrive Base 2023
BMW M440i xDrive Base 2024
BMW M440i xDrive Base 2025
BMW M440i xDrive Base 2026
BMW M440i xDrive Gran Coupe Base 2022
BMW M440i xDrive Gran Coupe Base 2023
BMW M440i xDrive Gran Coupe Base 2024
BMW M440i xDrive Gran Coupe Base 2025
BMW M440i xDrive Gran Coupe Base 2026