Help needed passing Emissions!

We used to do the emissions inspections in NY state. Depending on the year, the older cars emissions limits were pretty forgiving. The newer cars were very stringent. We used to be able to put the probe in another tailpipe to help out a good customer.
Then NY came up with a "brilliant" idea. A dynamometer wheel cylinder, you had to strap the car down, and put it through a crazy power cycle, spinning the wheels like mad, with hi rpms, while hooked up to the vehicles ALDL under dash plug. So you couldn't skew results.
And, as if that wasn't insane enough, some machines had a video camera that NY state supposedly monitored.
Cars would overheat, wheel weights would fly off, how stupid that brief era was.
It has come full circle and seems to be much better now.
But I'm outta that state, thank God.