map and build for it and then your stuck with it,very low calorific value so need to get lots of it in and much different comp needed.
i run 54 litre of 95 octane and 4 litres of e85 which makes e5.this is the eq of your tesco 99 ron.its really only 95% 95 ron petrol and 5% ethanol which is a by product of the dairy industry.
e85 is 85% ETHANOL AND 15% 95 RON PETROL....
ROB V
we dont have 97 and very little e5 in Ireland hence why i have to make up my own at the station....lol