[Tru2Chevy]

In PA, a certain mechanic I know (shop is closed now) used to cheat cars through emmisions easily. The dyno machine had two tailpipe probes that formed a y before going into the machine. They were supposed to be for cars that had true dual exhaust, so you could get an accurate reading. It was quite simple to stick the second probe in another car that ran much cleaner than the one being inspected, so the average came out as passing.

- Justin