aFe • MSRP: $529
A new product from Advanced Flow Engineering is this Stage 2 Sealed Intake. According to the company’s test, it has produced 12hp and 15 lb-ft of torque from BMW’s naturally-aspirated E9X 328i. This is because the intake outflows the factory system by as much as 56%. What’s more, the 6" conical air filter is both washable and reusable, guaranteeing a long life. The plastic cover has a carbon fiber finish, while the dyno-tuned plastic intake tube uses a velocity stack adapter to improve flow through dual auxiliary air inlet ducts that mount in the factory location.