how about this...
I just smogged my SVT back in April. I took out my open filter and put a K&N in the stock airbox. I have a 2.5" SCA catback exhaust, SHOshop y-pipe with cat, and I forgot to take out my Superchip. The car did not get a tuneup before the smog, it passed, with the tech looking at the gas filler and under the car for the cat.
That's with 98K miles on the odometer, all of those miles, mine.