Reply to "FI Ignition"

You cant use a knock sensor that way. They are not reliable enough. They often will get triggered on noise from valves or pistons and retard timing when there is no knock. Many experts recommend not using Knock retard or setting its sensativity low to only retard for extreeme knock.

Kind of follows with the idea that while you can depend on the wide band O2 sensor controling your fuel mixture, you shouldnt. Fuel ratio should be within 5% before the O2 sensor is turned on.