Go with a K&N Washable engine filter with a million mile gurantee. Runs $58 with tax at any auto store and you will never have to buy one again. I noticed a 2mpg gain vs a OEM engine filter.
Building an X-tour, I could've bought lots. Passed a 2011 STI 5dr for the same price. Jaguar would've given the difference on my old car to get it. I declined, "Don't get me wrong, it's everything I want, I can make it everything I want to be far easier...They're just too common."
'15 yields work for me...Finishing weight reduction,Lifting springs and stiffer shocks, brake overhaul, Exhaust, Rebuilt intake manifold, skidplates, Lighting, looking into roofpanel w/out sunroof. Lexan is my ally.