I have a 95 XJ 4.0 auto with 91k. I failed the emissions test with record numbers.
.........%CO2 %O2...... HC............. CO............... NO
15mph 15.0.....0.1...... 63, 15........ .46, .01....... 460, 12597
25mph 14.9.....0.1...... 38, 13........ .56, .01...... 539, 13040
Under the...