I heard from a few posts on this site. Also the piping is only 3" which is why I asked if it only throws the cell if it's bigger then 3". So that's why I'm asking if it will still throw a cell if it's only 3"
So I have a 2014 ex sedan with the r18, I just bought a CAI cheap one off eBay. But now I keep hearing about people getting check engine lights. can someone please explain what causes this to happen? Larger then 3" piping?