I had my car smog checked today and two codes came up PO171 and PO174 = Too Lean RH, LH. I have the injen cai installed and it throws a cel like I knew it would. But what exactly do those codes actually mean? The guy at the shop was like "if it throws one more code it won't pass the smog next time" :nono: . Are those the codes the the cai causes?