High NOX emissions? Tein Coilovers?

[Tim Rogers]

yip yi wrote:

>I just sold my friend my 91 SE-R and had to have it smogged and it wouldn't
>pass. The sniffer was showing my NOX was around 2000. I have since replaced
>the EGR(used)/cat/plugs and it actually went up. I don't know whats going
>on but I need to get this car smogged and I am hoping you guys might know
>what the problem is or what to do about it. Thanks : )

Did you check the metal tube that leads from the EGR pipe to the BPT (Back
Pressure Transducer) to see if it is clogged?  That's usually the reason for
poor EGR function and therefore poor NOX test results.

Tim