So I got EPA'ed last night and wanted to know how they test the loudness of my car.

How high do they rev the car to obtain the db reading?

Car in question is a DC5R, toda headers with a mugen twin loop. Factory DC5R does not allow you to rev the car past 5k rpm while being stationary. So I was wondering if I would fall under the limit if I took my car to a tester as it is at the moment, without reverting the exhaust system back to the standard one.

According to this youtube video, the mugen twin loop exhaust is pretty much the same volume as the OEM exhaust.