Has anyone seen this...it uses an air duct from next to the brake duct....something like you guys were trying to make...i guess it just came out....Dinan's new Ram-Air Intake Assembly is now available for the E90 3 Series.
The system takes full advantage of the ram air effect by literally scooping up additional cool air from the area next to the brake duct, supplementing the existing intake ducting for a better breathing 325. The result is increased horsepower and torque, as well as improved throttle response.
The system has been designed to work with the factory air box, fitted with the included free flow air filter element. A powder coated aluminum "air scoop" feeds greater volumes of cool air through a silicone hose and injection-molded air-box duct for a virtually invisible but highly effective performance upgrade.
The system produces a maximum gain of 7 hp and 6 lb-ft torque at 6600 rpm. http://www.dinancars.com/data/intake-parts.jpg
...go to their website...http://www.dinancars.com/