aFe Magnum Force Stage-2Si Cold Air Intake System w/ Pro 5R Media 09-12 Porsche 911 Carrera(997)

The aFe Magnum FORCE Stage-2Si is a cold air intake system for the 3.6L H6 in the 997-generation Porsche 911 Carrera. This version uses aFe's Pro 5R filter media. Buyers comparing it with stock or cheaper intakes should check where the kit draws its air. Owners on user forums say many aftermarket intakes pull hot engine-bay air, which cancels out the cold-air benefit, so a sealed or deck-lid air path matters for a naturally aspirated 997. The manufacturer's published flow and dyno figures were not confirmed for this listing, so verify those before comparing.

Fitment is the first thing to confirm. Listings for this part point to the 2009-2012 997.2 Carrera 3.6L, but some include the 3.8L Carrera S and GTS variants, so confirm the exact year and submodel with aFe before ordering. For DIY work, owners on user forums advise leaving the MAF screen installed, because removing it can upset the engine's airflow reading. Also expect the factory resonator to be bypassed, which tends to make low-RPM intake sound more noticeable. Searches for 997.2 Carrera cold air intake, Pro 5R 911 intake, and 997 MAF sensor intake install tend to match this product.