The BMW E46 M3 RPi's Ram Air Induction converts your factory intake system into a ram air type. Other aftermarket induction kits mostly suck in hot air causing a loss of performance. The use of heatshields are not very effective as heat shields mainly work to block radiant heat. Utilizing the stock intake boxes, expect a 5-11whp gain with 70mph airflow. RPi's Ram Air come with a 30-day money back guarantee.
We warrant the workmanship of the products sold. All items sold carries a limited lifetime warranty to the original purchaser. All warranty claims MUST be accompanied with copies of the original and replacement work orders. The work orders MUST show: 1) Date and mileage of original installation, 2) Date and mileage of replacement, 3) Serial/VIN number of the car, Make/Model, and description of defect (the word "defective" is not acceptable). RACE PRECISION (RPi) WILL NOT BE RESPONSIBLE FOR PAYING FOR LABOR COST OR ANY INCIDENTAL COST (INCLUDING DAMAGE TO OTHER PARTS) DUE TO ANY CIRCUMSTANCES WHATSOEVER. OUR LIMIT OF LIABILITY IS THE COST OF THE PRODUCT ORDERED. Labor cost is the sole responsibility of the customer. If you bring it to a mechanic, always remember that a GOOD mechanic will make sure it is the correct and good part before installing it. Or if you do not agree to this policy, simply return prior to installation. Customer will be responsible for providing all the necessary paperwork indicated above and shipping charges for the warranty claim, customer is also responsible for shipping charges of the replacement item if the warranty is approved. Warranty returns will be returned to the customer (at the customers expense) if proper documentation is not supplied. Warranty claims applies to that specific defective part and does NOT include consequential damage to any parts. (International customers are responsible for all shipping charges)