A former co-worker of mine had the same problem, the
guy at the shop told him to just drive the piss out of
his car for a while, then bring it directly in to get
reinspected, and he passed.
Sean Minehart
Team Underdog Racing
--- Dave Hardy <dave2020@mindspring.com> wrote:
> I have heard of DC Headers releasing too much heat
> and not getting the cat
> hot enough. I think NOx Generally points to the
> cat, but if you're pretty
> sure it's good I'd lean towards heat loss. What I'd
> do is put the factory
> cast iron exhaust back on there, and put the cat
> back in the factory
> location. This will help it retain heat. Also, in
> the 10 minutes leading
> up to the test, drive in a lower gear than you
> normally would. The higher
> RPM's will help to heat it. When you get to the
> test station, don't shut
> the car off. Stay with it, and preferably keep it
> revved between 2-3K.
> Also, run the lowest octane fuel you can. This will
> promote a more complete
> burn.
>
> I did these things and mine passed, even with higher
> CR pistons and a cam.
> I have to run 93 Octane in mine.
>
> Dave Hardy
> 89 SM
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