For more detailed instruction see this video here:    • Porsche Cayman Air Filter Replacement...  

As we all fell in love the extra intake sound of GT4RS, I wanted to introduce BMC air filter (which are actually the OEM providers of air filters for 991.2 GT3RS) and see how much of the GT4RS experience I can get without the carbon air intake box inside the cabin. Needless to say putting a higher flow air intake doesn't magically transform your GT4 to a GT4RS but it definitely delivers some of that excitement that we all love about the GT4RS's inside cabin air intake.