Already planned on PHP tunes in the next few weeks. Just cant decide on which sticks to go with. I have never had a problem with any K&N filter I have ever owned. I have put almost 1.5 million miles on my 11 company vehicles over the past 5 years, which all have K&N since the day they were purchased. On my 7.3, I've put 275K on it and it looks like a new wheel with no dusting. My dads 7.3 also has 200K on it and it looks like new, other than the oil misting from the CCV.