Time for the every two year test. The XJ12 always seems to have no trouble
passing CA emissions.
So, what should a well maintained with original cats, 87,500 miles 6L V12
%O2 HC (PPM) CO%
NO ( PPM)
MEAS MAX AVG MEAS MAX AVG MEAS
MAX AVG MEAS
15 MPH .2 78 21 16 .44
.06 .02 674 150 175 RPM 963
25 MPH .1 43 13 9 .41
.05 .00 673 136 231 RPM 1345
I was going to replace my cats and complete exhaust system but its hard to
justify with these kind of results. This car has consistently tested pretty
much the cleanest car I have owned for the last 6 years.
1995 XJS 4.0
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