Code was P0420. I've already had the cats replaced twice, under warranty, over the past two years. The first was before I installed the CAI
I have also driven in freezing temperatures with my CAI
and had no problems, but that was what it was sounding like the guy was trying to blame the problem on; cold air.
What I wrote in the first post was verbatim what the Toyota dealership wrote on my receipt for what they did about the CEL.
So yeah, I'm not sure what to think. Hopefully them tightening the clamp at the throttlebody will fix this problem. It has not come back on yet.