So I'm in the process of converting my 408 to E85. At my local pump they have Flex Fuel (E85) but it's rated at 51-83% Ethanol. Question is if you have your tune set for 85ish % what do you do? For instance when you do the water/E85 test and come up with say 51% what can you do to bring it up? The whole point of the conversion is to get the high octane rating at a cheaper than race gas price. Any help is much appreciated!
