SG has a load (LOD) instantaneous reading which may be useful in this.
I suspect all of you are way ahead of me on this, but I didn't see it mentioned.
I am trying to figure out how to create a BSFC chart on a motorcycle, where no OBDII interface is present. I use an SG in one car, and really like it. I'm upgrading to the SGII currently.
First post. There is some good info on this forum.