what the hell is the emission test? why do you guys need to be tested for? what happen is you fell the test?
emission testing is done to cars that are newer then 10 years (diffrent by state to state and county some times) they hook up a hydrocarbon dectector to your exhaust pipe to see if your car is running clean enough thats why its illegal to remove the cat
you need to get it tested because its the law lol
i don't know what happens if you fell the test
but if you fail it you have to get your car fixed i.e. new cat new 02 sensor common proplems like those (thats not everything that could fail you)