right, but the federal government has already detemined that the exhaust is 50 state street legal ( assuming that this is the cert is is talking about.) so If the federal gov has reviewed all 50 states laws and determined that in all 50 states it meets the laws of each state then how is that state going to say it's illegal? the state can not over rule a decision made in a higher section of government. Yes there are some powers reserved for the states, and this is one of them, so fl has said here's our law...and the federal government has determined that these exhausts meet that law. A federal entity has basically told fl that it is a legal exhaust but fl is overturning the decision... not a wise thing to try.