Is there a graph or chart or table to convert lambda voltage to A/F ratio?

 

There must be some confusion: .88~.92 Lambda is way too lean.

Typically, for turbo cars, you want to shoot for Lambda of approx .8~.82 from my experience, which gives you A/F ratio of 11.76~12.

A/F ratio is derived from multiplying stoichiometric (14.7) by Lambda. So, for example, Lambda reading of 1.0 gives you A/F ratio of 14.7. Consequently, the lower the Lambda value, the richer the A/F.

 

ebaker, read above to convert between Lambda and A/F.

Stoichiometric for gas motors is 14.7 part oxygen to 1 part fuel. So, for example, if your wideband yields a Lambda value of .82, you take the number and multiply it by 14.7 to arrive at A/F=12... that means, the o2 sensor is sensing 12 part oxy per 1 part fuel.. this is sig richer than stoichiometric, but desirable for turbo applications.

 

Not at all, Ruiner... collaboration is always appreciated... as soon as I am able to figure out what I need the new MAF limit to be, I'll be sending out my ECU for a re-flash. I think I am chasing the right tail...