The Neuspeed P-Flo intake uncorks the intake side of thw VW 2.5L engine. Although the factory airbox does a great job of muffling noise, it is inefficient when it comes to making power. Installing the P-Flo improves efficiency and produces more horsepower and torque. The stainless heatshield helps to keep intake temperatures low and looks great as well. You'll also notice a more sporty engine sound under acceleration. As with all P-Flo kits, the system utilizes a multi-layer cotton gauze filter that is both washable and reusable. This filter flows much better as well! This is a true bolt-on performance part, installation requires simple hand tools. CARB Exempt: Executive Order D-236-14 Notes: Fits: MK5 2005-08 VW Jetta and Rabbit 2.5L with MAF Sensor. Actual parts shown in photo.