I did the full K&N intake. It didn't throw any diagnostic codes, but I did get a check air filter warning on my instrument cluster, similar to a seatbelt warning that comes up if you aren't buckled. You can go into your display settings on your instrument cluster and turn off the warning indefinitely. That's all I had to do on mine, and still no check engine lights to this day. Just a filter replacement might not even give you that much grief.
I went with the easy compromise. I'm running the drop in K&N oiled air filter. The TB comes with an oversized intake system so I spent $75.00 for a lifetime filter. No codes, no hassles, no problems, not $500 bucks. I just wanted to know I had the best filter for engine protection as I am often in hateful dusty desert conditions. Now it seems like "does it provide better protection" is as debatable as "does K&N ad HP?" There are YouTube videos showing even the drop in filter can gain 5HP on a dyno. Who knows? I don't feel or even hear any difference. This is my first oil filter Im not even sure it was the right choice. I would love to hear more from you guys.