No way that gives HP without a tune i just really doubt it. It looks fairly well sized given the small turbo and well designed. Look at how long that front mount intercooler piping is, all the way from the front grill to the rear of the engine. Looks like a modded Subaru wrx before people figured out they could flip their intake manifolds.. really almost of that plus the small turbo will be the real restriction to power IF tuning was available, and is it yet?
Anyway, the K&N has a nice oil coating which will slowly adhere to MAF sensors etc. eventually making them dirty and read incorrectly. Of course that's all just a guess.
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