The estimated AFRatio in DSMLink is not solely based on the o2 sensor. It uses a number of inputs such as airflow and injector duty cycle to calculate its value. People who have widebands have found it to be fairly accurate as long as the car has NO boost leaks of any kind.

As for the low timing, I would say that a 20g at 19psi on a stock SMIC is causing some major heat soak and is likely the cause of your knock retard. Try dialing the boost way down for now until you can get a FMIC.

Greg


1991 Talon TSi AWD