Maybe some of the known figures are wrong. :sly
I agree!! I think the flash point is hotter with ethanol than with gasoline and might show the mixture to be richer than it really is. That is just a guess but the PIDs GM.HO2S11 and 21 go higher in my car with E10. In my car with gasoline they usually maxed out around .96-.98V, but with the E10 they went as High as 1.011V with the same EQ. Again I do not really know but you are on to something there, I think.
98 tigershark`
Stock fuel Pumps and E fuels, My biggest new concern!!!
In this post we or I have learned that the ethanol fuels require more fuel to reach stoich. With that said how many of us are running over 500 hp not to mention torque and the formula for IBPWs for peak torque, allot of us I bet. With so much more fuel being needed with the addition of E10+ I have been looking into fuel pumps for EFI. They all talk about HP and LPH but when you throw ethanol into the mix you have to consider is this fuel pump going to do the job. Certainly not the stock one. I went to an old buick forum 2002 site and read the comments on their turboed fueling issues and 11, 10, and 9 sec cars. It would seem that we also need a way to convert the performance expectations of our fuel pumps to a realistic view the we have to account for Ethanol.
The blend of Sunoco racing fuel that was mentioned earlier in this post had allot of ethanol in it. Economy is another but similar issue also. How can we know for sure that our fuel pumps can handle our current configurations and still leave room for dreaming about going faster. Does anyone have a way to calculate the HP rating/flow rating for a fuel pump with the various ethanol blends?
98 tigershark