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.Anyone put in a K&N air filter replace from the AC original? Did it through any codes? I did it on my HD diesel and I had all kinds of codes which had me remove it…
Also any performance difference?
Did an S&B CAI without thrown codes(asAnyone put in a K&N air filter replace from the AC original? Did it through any codes? I did it on my HD diesel and I had all kinds of codes which had me remove it…
Also any performance difference?
Thats what Im afraid of, less filtation. It may not have been the best choice for my type of use.....you missed plugging something in or have a vacuum leak somehow.
the filter itself is questionable, never run an oiled filter.
that said, K&N does FLOW but it also filters less in doing so...well proven over the years. they spend $$$ on advertising.