Failed Inspection

Adam95GT said:

Dataloged with the QH and the stock 02's are pegged rich and lamb values of 11's and 12's at idle

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I know that having the lowband O2 gauge is more of a light show than anything. But, it does show what the ecm sees and is a good indicator that the wideband O2 gauge is reading OK too.
I have both and they do fall in line with each other.

Hopefully you can pull some of the fuel out with that QH.

do you have long tubes?

i had a similar problem failed for HCs ... here's what i ended up doing:

a little background first ... my injectors are rated for 30# at 43 psi. so my tune says 30 for the high and low slopes. but since my rail pressure is less than 43 psi, they actually flow closer to 27-28#. so the adaptive logic in the computer had been compensating and adding fuel, and my KAMRF values were around 1.15 or so.

so i had made this plan to get the tank get down to about 1/4 or so and then i was going to add rubbing alcohol just before going thru again to lower the HCs. but i am so absent minded that i completely forgot to add the alcohol before getting in line, and did not realize it until i was at the front of the line. that was my "oh !@#$ moment.

then i realized that if i reset the computer and cleared the KAMs, then it would start running lean again, maybe lean enough to lower my HCs enough to pass. so i reset it and went through. and i passed!

would i recommend doing it the way i did it? only if you want to be absent minded and cause yourself unnecessary stress
but the alcohol thing still seems like a good idea

you could lower the first few values in your MAF Transfer function to cause the computer to provide less fuel at idle.

is the 17-18 at idle all the time or does it get lower when it warms up?