Has anyone added one to thier car? I have a 1997 boxster, I bought one and in the instructions it says I have to remove the left intake to get the old air box out...are the gaskets reusable? I already removed the snorkel so I can skip that instillation step...is it worth installing a cold air intake? Will I notice a difference in power/sound? Already sounds great thanks to Fister muffler...My car is running great now so not sure if it's worth installing the cold air system or not...all feedback is appreciated.