Quote Originally Posted by Reptile View Post
Weird....See, I was reading about this yesterday (and I'm not wanting to argue here)

The converter hardly does anything while idling, in fact the emissions are through the roof when idling. The best way to warm up a catalytic converter is to drive the vehicle.
I don't know....like I said, I was just curious.
I have seen cats glow, but can't say for sure they were fine before the "test"