The filter would be for any car - the only thing that matters is really how much air the filter will flow - you don\'t want to restrict any part of your air intake.
HKS foam is typically very poor at filtration and there are a lot of homebrew tests people have done on their websites to show this.
Generally, foam filters need to be oiled which isn\'t a problem for 95% of cars out there, but for the 5% with potentially dodgy sensors in the air intake, you want to be using a dry filter.
Cotton gauze doesn\'t work when dry. Foam filters don\'t either without restricting air slightly (but it\'s a better trade off than using a paper filter).
Cotton gauze filters are also single layer. They might lay a few sheets of cotton together before pleating them, but it still can\'t give anywhere near the dirt load capabilities of a multi-layered foam filter.
Have a look at
http://offroadpakistan.com/bitsnpieces/ ... ork_1.html for some interesting reading.
The test they use is more or less the same as the SAE J726 test we use to measure how the filters work and is industry standard.
I can\'t work out which of the filters in the test are foam - I know AC Delco is paper and K&N/AFE are cotton-gauze. S&B is foam, but I can\'t see them in the test results.
Not any more though 