quote:rich dip at 12 to 15 seconds, would that be a gear selection where you were below
JFB - Thanks for looking at this.
I assume this is accelerator pump & Power Valve action. I would love to have an RPM Sensor with this data as well.
One thing that I just learned is how "dynamic" this data is... if you just read the info, without really plotting this stuff, you just think "oh well, it should be at 14.7, right? It's a no brainer!"
It is interesting to see the trends, and the effects of various condition (Idle, Decel, WOT) on the ratio, but this data really doesn't tell a tuner what to do (yet).
Thanks for the annotation.