This AEM Cold Air Intake is NOT currently California street (CARB) approved. The stylish Scion xD has been attracting the attention of drivers since its introduction in 2009. Any driver looking for a unique car with good fuel mileage and stylish interior that is packed with an abundance of features should look into the Scion xD. Although the Scion xD is a great buy for your money, the 138 liter four-cylinder engine is not very powerful. To increase the power and performance in your 2009-2011 Scion xD, AEM Induction Systems has released a cold air intake system (41-1404P and 41-1404C depending on color choice) that will fit the tight engine compartment of your vehicle. The 41-1404 is not a typical cold air intake. It was designed with AEM's Electronically Tuned Intake (ETI) technology. This cold air intake incorporates AEM's ETI module which electronically adjusts the xD's MAF sensor to properly read air density. The result is an intake system that works with factory electronics and provides large horsepower and torque gains. The 41-1404 completely replaces the Scion xD's restrictive factory intake system with a gunmetal gray or polished aluminum (you choose) aluminum cold air intake. This cold air intake connects at the engine throttle body and places the air filter at the driver side wheel well. This ensures the delivery of cooler outside air to the engine. The 41-1404 uses a DryFlow air filter, part 21-201DK. AEM's oil-free DRYFLOW air filter is extremely durable and easy to clean. This AEM Cold Air Intake is NOT currently California street (CARB) approved. Installation is relatively simple and is accomplished using basic tools. All AEM air intakes come with a limited lifetime warranty.