Help with Histogram formula setup for EGR wideband datalogging

[96gt4.6]

I'm trying to setup my custom PID for logging my Innovative MTX-L through the EGR position sensor on my 2001 Silverado ECU. I have the PID setup and functional, however I think there is an error in my formula. I'm using this formula currently: ([PID. 2811]/.5)+10 , with PID.2811 being the EGR Postion sensor. The issue i'm having is I can't keep the value displayed in the scanner to agree with my wideband readout equally at both ends of the scale. I've tried adjusting the +10 at the end of the formula, and I can get it to agree at one AFR, but then it's off by up to a point and a half at the opposite end of the scale. I think this wideband can go into the 9:1 range vs. most that only go 10:1, so i'm thinking maybe that's the issue.....my 0-5V signal is expecting 10:1 up to 20:1 as and example, whereas this gauge can go 9:1 up to 22:1?

Any help is appreciated, i'm still learning on setting up PIDS and such. I also have my config files and will post as soon as i'm on my Laptop.

Thanks guys!

[96gt4.6]

Figured it out......looks like the VCM Scanner will only accept a wideband input range of 10-20:1, whereas my Wideband puts out a range of 7-22:1. My wideband's output is programmable, and I changed the scale to match the scanner's scale and all is well.