I've been looking into CAI for my 2019 5.7L WK2 for a while now. I've looked at Corsa, AFE, Volant, and K&N. Admittedly, I think I have to go with the K&N, because I have the SRT style hood, so the others don't really fit. Or, I have to do some damage to the engine bay, removing some metal tabs that stick out.
That all said, I see all too often, people saying, "For the love of god, just don't go K&N". I can't find any real reasoning as to why I shouldn't go with that brand.
I have read the difference between oil and dry filters, and K&N now makes a dry filter, so I was going to put that one on, rather than the oil one that comes with the kit.
Other than that, all I can tell is, for the rest of the CAI it's simply a tube attached. There's no real technicality to the CAI that would need and garner it causing more trouble elsewhere. Has all the same silicone elbows and rings attaching it as the others.
So, why the hate?