SVOboy -
I don't think you can do this, but I'd like 3D "future" charts of :
X=Curb Weight
Y=HP (but not a parameter in the garage,
)
Z=Ecomodder MPG
X=Curb Weight
Y=HP (but not a parameter in the garage,
)
Z=EPA MPG
My "prediction" is that weight*HP will yield a smooth 3d graph for EPA MPG across cars, but a "bumpy" graph for Ecomodder MPG.
CarloSW2