Originally posted by pre98zetec:
unplug the battery for 10 minutes before you go take the test.




No. Supportively speaking and not trying to step on your toes, but they will see the car hasn't cycled through completely and fail you on the spot (or just not test your car at all- but for me here it would be the first).

As far emissions goes, they will not actually test the exhaust, they will rely on readings from the PCM.

Hope this clears some things up.