The smog check is different in the sense that an RV is not driven on a dynomometer during the smog check (if you are in an Enhanced Smog Check area). In a Basic Smog Check area all vehicles are tested the same; at idle and at 2500rpms. The actual emission cutscores are based on the vehicle's engine size, and when being driven on a dynomometer, the vehicle's weight.
posted by SmogTips Support
