I agree using lambda makes sense, well at least to me. As this is how Ford does thier calibration for fuel as well.

Ryan

I see two different methods in this thread.. one says to divide stoich by a value to reach a desired a/f, then enter that value into the PE modifier rpm cell. Then another says to multiply stoich by a value, then enter that value into the PE modifier cell.

14.67 (stoich) x 0.88 = 12.9 commanded A/F

...or...

14.67 (stoich) / 1.14 = 12.9 commanded a/f

Value in bold is what is input into the PE Modifier RPM cell.

The computer divides 14.7 by whatever is in the PE cell. So, if you put in 1.35, then the computer will try to get an a/f of 10.89:1.

I will throw my 2 bits in. I am currently one of those turbo guys using 1bar MAF setup. It works, and works good. However, I have not maxed out the MAF yet. My PE values are not rediculous, most of them are 1.35. Right now I see no reason for a 2 bar setup.

To continue your point...the smaller bolded number is lambda. The larger bolded number is EQ Ratio. Depending on the units you have set in your tables (or the units they are defaulted to), you pick the appropriate format. The EQ ratio is calculated as 1/lambda and the AFR is calc'd just as you have it above.

Thanks. I use EFIlive and oddly enough mine shows lambda while most show EQ Ratio.