The R55, R56, R57, R58, & R59 MINI Cooper S (MCS) and MINI John Cooper Works (JCW) and have a major bottleneck to air induction due to the restrictive factory airbox.
The Defenders of Speed Cold Air Intake (CAI) is specifically designed for the new, turbocharged MCS and Factory JCW models to maximize air induction and is a first step in maximizing combustion while aiding in reduction of inlet temperatures.
Our system pulls air from the factory air hose as well as the large, isolated, empty void behind the bulkhead panel between the brake master cylinder and the battery via a completely enclosed filter system.
The area where the hood meets the windshield is a high pressure zone at speed. This high pressure zone dumps cool air into the low pressure area behind the MINI's bulkhead panel through the factory air inlet vents at the hoodline via cowl induction*. (*A principle re-discovered and touted by GM in 1963 and used successfully to this day on race and street vehicles). Thus, with the DoS R55, R56, R57, R58, & R59 CAI system, a constant cool intake air supply is available to the intake.
Repeated dyno testing has shown that the Dos CAI system nets a consistent 6-to-12 whp (dependent upon other modifications) while improving engine response throughout the powerband. This kit also provides one of the slickest looking installs for the money of the many CAI options that currently exist for the R55, R56, R57, R58, & R59 JCW and MCS.
Kit Includes: CAI unit, Rubber Bulb Gasket Material for Inlet Hole, CAI Hose Clamps, Narrow T-Bolt Turbo Inlet Clamp, Silicone Couplers, and Complete Instructions
Please note that this part requires cutting a hole in the factory plastic upper bulkhead panel (BMW Part #: 51 71 2 755 866).
A) If you're short on time, don't want to mod the parts that came with your car, or don't want to buy a large hole saw (that you'll likely use only once), you can purchase our Pre-modified Upper Bulkhead Panel.
B) If you want to mod your own bulkhead, but don't want to buy that big hole saw and arbor, you can borrow a hole saw and arbor from DoS via our Hole Saw Loaner Program.
Give us a call at (404) 433-2452 if you have any questions.