Currently with the 155k mile old exhaust and a K&N that hasnt been cleaned for 10k miles.
The dang guy made me remove the MSD DIS. That was a pain in the ass, especially after waiting almost an hour in line

Here are the results, as you will see I did VERY well...
2500 rpm test
HC MAX:140 MINE:7
CO MAX:1.00 Mine 0.01 !!*
The RPM stayed between 2497 and 2503, 6 rpm difference is pretty good
IDLE test 700 rpm
HC MAX:120 MINE: 11
CO MAX:1.00 MINE: 0.01 !!*
*The guy said my CO readings are the lowest possible number that his machine will show, so basically it can almost be thought of as zero

One thing I noticed is that the factory tach is fairly accurate. When showing 2500 rpm the machine was reading 2500 rpm (inductance through plug 1).
Also the half ticks are 500 rpm EXCEPT the first one. The first one is actually the IDLE rpm which is 700 rpm exactly on mine