Im not sure re some of your 5 gas readings.

Can you verify these please:

unplugged one injector for about 30 seconds, the HC= 0, CO=0, CO2=.3, O2=6.8, NOx=165, lambda=1.43.

ie. CO2 = 0.3%

Ignition lead off and HC 565, CO=161, CO2=.7, O2=.8, nox=.2, Lam... Login to read more.