Quote Originally Posted by joecar View Post
Use lambda, otherwise AFR will be incorrect unless you used fuel with a stoichiometric ratio of 14.7.

Lambda is independent of the fuel's stoichiometric ratio.

e.g. in each of these cases, when the wideband read stoich it will report lambda as 1.00:
- E00 = stoich 14.7
- E10 = stoich 14.2
- E85 = stoich 9.7


lambda = AFR / stoichAFR

or

AFR = lambda * stoichAFR

Ohh Okay I see what your saying!