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Re: is 3500ppm nox precat on a 97 cavalier too high?
Posted to Emissions Forum on 3/31/2004 73 Replies

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Yes. 10/100k FTP standards for LDV Tier 1 are:

NMHC = 0.31

CO = 4.2

NOx = 0.6

The 5/50k standard:

NMHC = 0.25

CO = 3.4

NOx = 0.4

TEST .. CO ...... THC ...... NOx ..... Login to read more.

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