ibkevin

I'll run it again on Thurs with the +6fuel and -3deg (todays NOX was only 12ppm over my passing in 2012) seems like it should pass that way. With the extra fuel, engine temp damn near refuses to go above the min normal mark.

Tech said it said the computer takes the highest numbers of five attempts.. sounds right?

Laust Pedersen

Complementing Joshua’s post #4:

This figure (from “Automotive Electronics” by Bosch) showing emissions as a function of AFR with and without cats should help diagnose most emission problems.
Remember that the graphs assume a healthy catalytic converter and engine (low leak-down, uniform injector flow and well-functioning ignition).

Laust

ibkevin

New Bosch rotor, cap and wires a few years ago.. wires are well spaced and secured. I'll pull the cap and take a look, carbon fouling just might be a problem. Thanks much Laust.

ibkevin

* UPDATE 1*

Good gawd... that FQS #7 setting is the worst.

25mph -
HC - 201
CO - 1.66
CO2 - 13.3
O2 - 0.5
NOX - 2348

15 mph -
HC - 249
CO - 1.9
CO2 - 13.0
O2 - 0.6
NOX - 1591