I'll be getting the 92 awd etested when I get home and its been a while since I did one with a AWD, with my beater fwd I just stuck some alcohol from the drug store and she passed, but my AWD is a different story, I have removed all the emissions equipment and I have 650's,burnt chip,adpr,walbro 225, maf-t, but..... I do have a catalytic converter at least.
Do they fail if there is a check engine light or is it simply based on the exhaust readings?
If it fails could it be as easy as turning the fuel pressure down?
Can I use my logger to check if it will pass?