I am also a member of the old fart club and completely get your point thompsoj22. CAI is also a concern and a partial motivation for putting the OEM performance intake on. I had a CAI legal AIRRAID intake with the emission sticker on it. Sometime during the year, the sticker fell off and the smog shop wouldn't complete the smog until I got another sticker. After some research, I found out AIRRAID would send me another sticker. All I had to do was send them a email with a picture of the intake mounted on my vehicle with a pic of my registration. 1 week later I got a new sticker in the mail but it was a pain when it came to getting my smog done. I thought if there was a OEM Performance intake similar or better than AIRRAID INTAKE without the CAI STICKER hassle, that's for me. Which led me to this kit I found. The AIRRAID intake had a 3.5" diameter mandrel bent components. The OEM PERFORMANCE INTAKE has 4" diameter tubing. So if I'm not mistaken more air flow equals more horse power. One of my Tahoe's purpose is to haul a Rv which I also found out the hard way, lacked power and made going over the Grapevine mountains here in California a bit scary. So here we are here. I will admit the journey that led me to this project is fun and educational, especially being a old fart through all this.
One last point, I dont think a simple oil change is equal or better than a AIRRAID INTAKE or OEM GM PERFORMANCE INTAKE when it comes to improving the performance of my vehicle or any other vehicle. But just to be on the safe side I'll do as I always done and keep changing all my fluids as recommended, BECAUSE IF WE LOVE OUR CHEVYS THAT'S WHAT WE DO, RIGHT!!!!!!