I don't think 14.7 will give the best emissions across the range. Essentially the mod laws require you to do the test if there is major changes, IE, ecu changes, bigger injectors, yada yada. If you are still running your factory ecu, without any tweaks, the car is still compliant with the emissions rules, as long as your cat converter works......

You could have a "EPA" tune & then a power tune for your car, if you get called in, load the "EPA" tune, rock up & pass the test, then go home & reload the other tune. I really do think the EPA testing is a crock, there isn't that many modified car's around that the pollution they create is going to have an adverse effect on the environment, and even if the pollution is greater, that is more than offset by not scrapping the older modified car & replacing it (at huge initial pollution cost) with a new car.

We might all have to start doing serious mods like super/turbo charging to vehicles that are light commercial, like utes & so on, as they have less emissions rules to comply with.....

Cheers

ToranaGuy