The DCF on that VIR at 15 mph is 1.32

The 15 mph raw data before correction was 1709 ppm NOx, 78 ppm HC, and 0.57% CO. CO2 and O2 are not corrected.

There is no way to know (without more info) if the 32% dilution is all after the catalyst bed that is inten... Login to read more.