S&B Filters has been around for a long, long time, and have nearly perfected the fine art of the cold air intake. While probably better know for their Powerstroke diesel cold air intakes, S&B also manufacturers an impressive line of fully enclosed Mustang cold air intakes that offer up horsepower and torque gains without the need for custom tuning. S&B designs, researches, and tests each of their intake and filter designs in the United States at their 60,000 square foot Ontario, California headquarters. S&B uses some of the most advanced design and manufacturing techniques in the industry to ensure that each of their kits is of the highest quality, and they back each of their Mustang cold air intakes with a million mile limited warranty.