I understand there is a way to connect the LM-1 WB to the '7730 ECM to read out A/F in the Fuel Value block instead of what's there.
Can anyone help with info on how to?

 

Possibly you are thinking of this info:

http://www.eecis.udel.edu/~davis/z28/WB_hacs/

It is a patch for the ECM code to read the incoming WB info and convert it to an AFR reading. I don't believe the conversion table is setup for the LM1, just the DIY-WB.

Worth checking out though.

RBob.

 

The LM-1 output can be programmed to emulate the DIY-WB. Follow this chart when programming the output table.

The DIY-WB Controller Vout Table for Gasoline
Vout Lambda AFR FAR
1.40 0.685 10.08 0.099
1.45 0.695 10.23 0.098
1.50 0.706 10.38 0.096
1.55 0.716 10.53 0.095
1.60 0.727 10.69 0.094
1.65 0.738 10.86 0.092
1.70 0.750 11.03 0.091
1.75 0.761 11.20 0.089
1.80 0.774 11.38 0.088
1.85 0.787 11.57 0.086
1.90 0.800 11.76 0.085
1.95 0.813 11.96 0.084
2.00 0.827 12.17 0.082
2.05 0.842 12.38 0.081
2.10 0.857 12.60 0.079
2.15 0.872 12.83 0.078
2.20 0.889 13.07 0.077
2.25 0.905 13.31 0.075
2.30 0.923 13.57 0.074
2.35 0.941 13.84 0.072
2.40 0.959 14.11 0.071
2.45 0.979 14.40 0.069
2.50 1.00 14.70 0.068 *
2.55 1.037 15.25 0.066
2.60 1.077 15.84 0.063
2.65 1.121 16.48 0.061
2.70 1.168 17.18 0.058
2.75 1.219 17.93 0.056
2.80 1.276 18.76 0.053
2.85 1.337 19.66 0.051
2.90 1.405 20.66 0.048
4.00 Free Air
* = Stoichiometric Point AFR = Air/Fuel Ratio FAR = Fuel/Air Ratio

 

Craig had another way to do it in the Super AUJP thread by changing a few bytes in the code.
Might want to check it out too.
https://www.thirdgen.org/techbb2/sho...5&pagenumber=3

Look down at the 6-7-2004 response.

 

HaulnA$$....thank you that is just what I was looking for.

Don>>>