Here to increase efficiency that much more is the AEM 21-779C cold air intake system. By replacing the Mazda 6's stock restrictive filter and intake housing with the 21-779C, you maximize air flow through its powder-coated, mandrel-bent aluminum air intake tube and oversized Dryflow synthetic, washable, reusable air filter. The results, shown in dynamometer testing of a 2014 Mazda 6's stock 2.5L, 4-cylinder engine turning 2700 rpm, were an estimated 7-hp gain, and at 3200 rpm, a boost of an estimated 8 ft-lb of torque. Enough to make climbing freeway onramps a piece of cake.
This system was developed to bolt into the 2014-2016 Mazda 6's stock air box space, accommodating the factory emissions control devices, including the mass airflow sensor and breather tube. No special tools are required and detailed instructions comes with it and can also be downloaded from the AEM website. A special heat shield is part of the installation that is designed to protect the filter, reduce intake air temperature and increase horsepower.
The cylindrical, cone-shaped AEM Dryflow air filter is made from an oil-free, synthetic filter media that can be used for up to 100,000 miles (depending on driving conditions) before it needs to be cleaned, but you can inspect and clean it more often if you wish. Its pleated design and unique synthetic medium allow more dust and particles to be collected before air enters the induction system, so while there may be a big buildup in the filter, it can be easily cleaned with AEM 1-1000 air filter cleaner spray, rinsed in running water, dried, and reinstalled.
The 21-779C air intake is protected by AEM's lifetime limited warranty, to last for the life of your vehicle, except in cases of mechanical damage (i.e. improper installation or fitment), damage from misuse, accidents, or flying debris.
Estimated Horsepower Gain 7 HP @ 2700 RPM
Note: CARB Legal D-670-24
- Increased horsepower
- Tuned and dyno-tested to improve acceleration and engine sound
- Low restriction aluminum tubing
- Easy to install using commonly available tools
- Air filter lasts up to 100,000 miles before cleaning is required (depending on driving conditions)
- Washable and reusable oil-free filter media
- AEM Lifetime Limited Warranty