The P1000 is the one code that can't be cleared, and everytime you try, you actually reset the pcm and it will take even longer to clear. I'm hesitant to switch back to the stock tune as well, because it will cause the same delay. Also, I shouldn't have to use the stock tune. The tuner shouldn't cause the P1000, but does it really? I don't know the specific drive cycle, but shouldn't I have met all the requirements after several weeks of driving?
Some folks say that a P1000 will fail inspection, and others say it won't. Does anyone know what the rules are for TX?