I used a transform function I found on this site its
Input/1024)(+.05)= lambda
Idle seems to read correctly decel fuel cutoff spikes lean like it should but in a wot pull it should be 12:1 but it reads 10:1. It's a stock tune on a c7 z06. I don't see how the stock tune could be that much off but I tried to adjusted the maf anyway. I got it to the commanded 12:1 and did a few pulls then checked sparkplugs and they're lean AF. So either my transform function is wrong or the wideband is a dud. What do you think?