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why don't you like the performance air filters? aren't the factory air filters more restrictive?
It's not so much "Don't like", it's more that I don't see the value in them. There is a very small difference in restriction (OEM and good aftermarket paper filters are actually pretty darn good) and filtration is slightly worse than OEM style. So, if you have gutted your car and it is now race-only, K&N might make sense. If it's your daily driver, just stick with the OEM style filter.