Quote:

On a typical tune for e-70-80 which way do u jet for best performance is it up/down now that the weather is getting cooler.I can't seem to locate any true e-85 here in St.Louis



P.S Anyone no of a station near the Lou. that has true e-85?Or have they all converted over to there winter blend?.....Thax.



When you go lower in the E rating as in E-70, you
have more gas and less alky... so its trying to be
more like a regular gas.... you added 30% more fuel
when you changed to E-85, so the lower the E you take
jet out... but still jetting for MPH