yah lets get people into new cars faster by fucking up their old engines with corrosive fuel! And while we're at it lets ruin your lawnmower and boat because E10 doesnt do it fast enough! The EPA is retarded.
they are currently testing 06-01's for compatability my guess is they will say yes anyways, the requirements that we use a certain amount of renewable fuels means they have to do this
its been a while since i fucked with other manufacturers efi systems but Gm can adjust up +/- 44%, most only see +/- 16% but the factory pcm will go to 22 and up, so it can already correct for it but since at WOT most systems are not in a full closed loop situation due to narrow band o2's it still means running lean up top, this is probably the issue they have to tackle more than anything