Lambda readings

[Kevspec]

Does anyone know how to setup the ecu to correctly read in lambda? I can do it all for afr and in settings I can select lambda but do I need to changed calibration if so what do I set that to? I am wanting to do this for easier tuneablity and also for different fuels

[antus]

Assuming you mean logging in tunerpro you'll need to edit the XDF or ADX and modify the equations to calculate for lambda instead of petrol afr. The data inside the ECU is not in AFR in the first place, its the equasions that convert the data in the computer to human readable formats, and so you do the maths and update the definition to convert to convert to a different measurement. Figure out the maths first, how you'd convert a value from AFR to Lambda, get it working in say excel or even just with a calculator, then look at the equations in tunerpro and change them until you can see its giving you the lamba value you expect for the data point you are editing.

[Kevspec]

Ok sweet i think I have figured all that out to read in lambda now. As for open loop afr would it work if I put in lambda numbers?

[antus]

yep. units in the xdf and the adx are calculated by the equation and can be changed when you are across the maths. this can also be done to convert miles to to kms and the other way or other types of units as well.

[Kevspec]

Ok sweet so I got lambda working fine as an input but it won't let me change the open loop afr table to lambda that needs to stay in afr unless someone can help

[Kevspec]

So thanks to the1 got it all sorted just had to add "/14.7" in the conversions