having problems with emissions yet again. failed on hc and co. all sensors are good, everything stock. I hooked up the laptop to it and i'm pulling a blm number of 129, still running rich. what are ideal readings for MAF and O2 voltage., any help would be awesome.

 

Well a blm of 129 is pretty good. I cant recall what ideal readings are for those sensors but if theres no check engin light and the car runs fine my guess is that it needs a tune up, air injection system needs help, or a new cat unfortunately. 129 BLM means its making virtually no corrections to the fuel delivery. How far are you off by?

 

off by about 70ppm on hc at 15mph. i've had a problem with burning oil for a while, found out i had valves overtightened. fixed that problem, replaced the burned 02 sensor, was running great until i reset the computer. i'm thinking i burned up the cats too, because all of a sudden it blew smoke on me again and it smells really rich. might just have to suck it up and spend the 350 on cats.

 

129 blm is almost perfect, perfect being 128.
0 is taking out the max
255 is adding in the max
128 is right in the middle

 

Now when u say it was running great till you reset the comp what has changed? Thats odd that its running a 129 bml's and smell like your running rich? Burning oil might account for a thing or two though.

 

yeah. nearest i can figure it through all the crap i put the cats through, the burning oil and a defective ignition module causing a couple of nice backfires. i think the cats are fried. once i reset the computer and through it back into relearn, which i think we can agree takes WAY too long, it just has to remember the settings.