Just read K&N test results on their new filter. Would love to see a study on the stock filter by a unbiased entity. Ford did a good job with this filter. Very large folds. Any company can create more air flow.
How to
I used sharp drill bits and a dremel tool. I used the cone shaped cutter with the blade cutters on it. Don't use a cone shape grinder. Need to be carefull and not scratch the plastic walls. Took about 45 min.
grill opening
I don't pay attention to the cars sensors. They are not that accurate. Common sense tells me its getting more air. No way it can't be. More cool air is good.
offset
I put that setup on from my 2007. Looked very at first then noticed camber. I think it was because the offset was not correct for that car. I have a thread on here with pics ,, search 2007 wheels on 2015 ,,,, see what you think