Well, I guess from what I just heard that the Portland/ Metro area does do a testing when you renew your registration and your license. So if your vehicle doesn't pass inspection they impound your vehicle and sell it for parts.
![Gap :gap:](https://board.marlincrawler.com/Smileys/marlin/gap.gif)
Sucks that Oregon has finally started to do this but I guess it is inevitable. As for the propane setup, I have heard it is all in how you adjust the settings of the injectors and timing, best bet would be to call them and find out.