Dyno with O2 Sensor

[Berkeley and Bill Conner]

Bruce.Hearn at cd-tech.com wrote:

> I don't know how much oxygenates are added to make winter fuel in your
> area, but the effect isn't that big.  Most oxygenates will have about 1/3
> fewer BTUs/gal than straight gasoline.  A simple calculation estimates a 2%
> -4% power loss for 5%-10% oxygenate addition.

Thanks, Bruce.  So on a 140 WHP engine, that would be 2.8 - 5.6 WHP.  I'm
measuring 5-7 WHP loss from October to February, along with what appears to be
some leaning out.  Still, gives one pause....

Bill Conner