OK...I dont have a precat gas sample...but I can give ya VIR data for lambda crunches...

It came in as a test-only failure for NOx. at 15-50, it was HC-17ppm, CO-0.02%, NOx-1144ppm, CO2-14.5%, O2-.2%

Now...in THEORY, thats pretty derned close to perfect LA... Login to read more.