Originally Posted by chris_knows
What's "afr"? lol.
You confused me, but if I look through it more carefully, I'll probably figure out where you got the numbers from.
Based on (my) logic, your engine would have to run at higher RPM to get the same power, and would therefore produce more heat.
I think he means Air/Fuel Ratio...but that could be wrong..
I have no idea what all those calculations are for, I hate math.
But simply put, they up the compression ratio in flex fuel engines, which produces more power without increasing RPM when burning E85, and so that you don't burn too much gasoline with the higher compression ratios, they have the computer control the fuel injectors when you're burning a tank of fuel that has more gasoline in it then E85.