Well, my Camaro went through the dreaded California "test only" smog check today. My dad took it in for me since I'm on the other side of the country now. Here are the results... 15 mph HC max 196, measured 24 25 mph HC max 163, measured 21 15 mph CO max 1.27, measured 0.00 25 mph CO max 1.07, measured 0.01 15 mph NOX max 1295, measured 411 25 mph NOX max 1155, measured 338 What do you think? I'm very impressed with my car...it has NEVER let me down. It has a 2001 Goodwrench 350 crate motor with a mild Crane cam and an Edelbrock Performer intake...that's it. No headers, stock y-pipe, new hi flow cat, and a Flowmaster catback. All smog equipment is intact.