[The Radium King]

dude, lots of stuff on this forum (and others) on the topic; i'll provide some of the salient points ...

- aftermarket filters - the oil used can foul the maf (happened to me); has nothing to do with the increased airflow as you state. once the oil is gone, more particulate matter is allowed to pass, shortening the life of your engine.

- smoothing out airflow - this makes some sense, unless you buy into the concept that the resonance chamber that you are deleting is actually there to absorb pressure waves caused by the intake tuning from traveling upstream and impeding airflow. there is also the fact that the oem intake tube is of a decreasing diameter in order to facilitate intake tuning - you sacrifice low rpm torque for high rpm hp.

- cold air system? what do you think is in the car now - a completely sealed unit that only draws air from the outside. and you want to replace it with a unit that is not sealed on four sides and has a piece of weather-stripping to seal the top? iat drastically affects hp, and something like this will increase iat - it's a hot air intake. also note that some (uncertain if fabspeed) use metal for the enclosure - heats up faster and is heavier. I note that the product you list is for a 986 or a 986S - did you know that the two models have different diameter maf housings? the ecu uses the diameter of the maf housing, and the signal from the maf, to determine airflow. change the maf housing size and you use up a big part of the 20% ltft adaptation available to you. ps, this thing has an oiled filter as well - see above.

personally, I think the best solution is to do what Porsche did on the 2004 anniversary edition - use the airbox from the 2005+ boxster/cayman. better airflow, larger filter element. a factory cold air intake.


edit to add - other options are the generic cold air intakes such as the k&n Apollo and the bmc CDA and DIA. I've tried these and, if large enough for the airflow required by our engines, are a pain to fit in the engine compartment.

there is also the product available for the 987/cayman (I think by evo) that mounts the filter in the space between the engine compartment and the quarter panel. apparently the are quite loud (they are, for all intents and purposes, located in the cabin) and rain ingestion is an issue. and the oem air box is just as good.