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I purchased an afx 2 wideband and I was able to get the VCM scanner to read the right lambda after calibration. However I am unable to use the sensor input in the histogram for EQ Ratio error. The device that I transformed is pink in the math parameters under Marth- predefined-> lambda & AFR -> FX EQ Ratio error. I tried using the serial voltage input and writing a custom equation of
100 * (([3003.10]/5.197505198) +.411 - [50118.238])/[50118.238]
I'm still not getting any error displayed in the histogram.
When I configured this to the scanner I added the channel and transformed oxygen sensors ->equivalence ratio-> NGK AFX
I changed the function to
5.1975 and .411 and selected yes for option of generic sensor. Did I do something wrong or did I miss something. I also changed the parameter to the Ballenger Wide preset for the transformation and still no luck. I really do not want to tune this based on fuel trims so i am trying to get this up and running thanks.
Depending whether you're scanning AFR or lambda affects which math channel you need to add to your histogram. If you're inputting a lambda value into your scanner then you need to use the 'AFR error' math channel. Try changing the PID and let me know if that works. Essentially if you're able to scan the lambda value then the AFR error channel should work for you.
Thanks for the replay. I added the AFR error channel and that did not work either. However I went to add the EQ ratio error channel back and it started to record data. I'm not really sure what happened cause I added that channel several time over the last few days with no avail. But everything seems to be working now. Thanks again.
that's a weird one Alton but I'm happy you've got it working now anyway. Nothing worse than doing the same thing and getting a different result. Makes it hard to know where the original problem was.