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Re: is 3500ppm nox precat on a 97 cavalier too high?
Posted to Emissions Forum on 2/13/2004 18 Replies

Check this link (lots of reading)

[...] [[...]]

And pay attention to this phrase and the whole paragraph that contains it.

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Without EGR, maximum NOx emissions were at about 16:1 A/F ratio. Maximum NOx level changed to richer A/F ratios ... Login to read more.

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