I did a few searches about K&N's cold air intake for the 4th gens, but it seems to have gotten mixed reviews for the $600 price tag.

I've read that the gains are noticeable (claims are upwards of ~18-19hp), and I've also read that it's actually "worse" than the stock OEM intake/filter without a tune.

Does anyone actually have dyno results from pre/post install? Any noticeable gains on the butt dyno or better throttle response, or is this purely just for aesthetics? Any insight or real world testimonials greatly appreciated!

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