scanner set up for wide band afr /maf error set up for aem 30-0333

[gmonde]

not sure if I have the correct user defined math to get the proper afr error percent ,, I will need to get this correct to set up for maf /afr error
attached is the lay out ,, below is the user define I came up with to get the error but doesn't seam correct ,, gmonde

g8gt gauge layout lsa.Layout.xml


100 * ([501201] - [50127.234]) / [50127.234]

[Codes]

The formula looks correct 100*(WBAFR-CmdAFR) / CmdAFR. Just make sure the data you collect for the Maf error graph is the user defined afr error math parameter you created.

[gmonde]

attached is are layout and a log

maf airflow freq vs airfuel ratio.Layout.xml

test drivabuilty 850 dynamics.hpl

[Bricks67]

Hope this helps somebody. It appears original poster had variables switched. I have the same wideband. Here is what I use

100 * ([36.234] - [50121]) / [50121]

I kept having problems with this and other graph layout parameters, due to not logging the right channels (sae vs generic etc). If your not logging the channel you can't use it in a graph. A simple test for this and filters you want to use is to input them in a user defined math parameter (found under tools, math parameters) Input your filter string there and it will highlight channels that are missing.