Title: Pretty decent plus...
Product review: its one of the few aftermarket items you can get in terms of air performance parts in CA (for my car), but it was a difference between this and a normal paper filter. I drive highway everyday and my 2002 mercury cougar 2.0L 4CYL would normally get about (according to sensors in my car) 34.4 hwy mpg at 75mph [before] and 37.3 hwy mpg at 75mph [after] so in terms of fuel it is a small difference (2.9mpg extra). Now power wise its not too noticeable maybe just slightly faster revs, but because of the savings in fuel being that this is a lifetime filter this is worth it and it would pay itself off in time
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