Thursday, September 4, 2008
LTFT vs. Ethanol Content
Well, the E30 data wasn't at a 70 mph cruise, so there was a lot of crap in it. Not usable for the analysis I want to do.
I plotted long term fuel trim vs. ethanol content for the data that I have (Alcohol's two data files, and my Scangauge reading from my last tank), and lo and behold, not only is there a linear relationship, it is a very stron relationship (R^2 of 1!!!!!!)
Pretty frickin cool.
And now I have a nice equation that I can use to predict LTFT based on tank ethanol content.