just_aceyou can only run a % of the e85 with PULP
That kind of 'phrasing' is a bit misleading. You should say "you can only run a certain % of ETHANOL".
E85 means there is 85% ethanol mixed with PULP.
Servos that sell this kind of fuel, don't necessarily put 85% ethanol in the fuel. It is common to see something like 70% ethanol instead, to avoid cold-start problems associated with E85.
I'm sure you already know all this just_ace, I'm just clarifying for other people.
Flex-Fuel vehicles are those than can handle any ethanol content in the range from 0%-85%.