If I understand correctly, all that can be gleaned is, either the mixture is too lean or too rich and cannot be adjusted in our cars anyway....because it is all done by the ECU. This may/or may not also tell us if the O2 ,Maf, injectors are up to standard or faulty.
I have heard that our vehicles run a little rich anyway, this is hearsay only ....I will deny, deny, deny if pressed
Have I over simplified it?
I had a look at the Apexi products and they seem to be solely for the Japanese made vehicles.These products allow some fine tuning to fuel.
Anybody have some experience with these or similar products and care to share the results.
Tailor