Ok I didn't want this to turn into a problem thread, experience is key in all of this and we all see things first hand of outcomes with experimenting.
I don't tune e85 with AFR, always in lambda as no matter what fuel you use Stoich value is ALWAYS '1'. Just makes life easier
I have a little test kit for ethanol, very simple to do. Buy a small beaker that can take 500-1000ml. Then put 100ml of water in to make the ethanol go cloudy an then put 500ml of fuel in to make the total of 600ml. Then the maths is measure the petrol at the top - petrol content / original amount x 100 = ethanol %.
Also where the ethanol wins is it doesn't really matter what the fuel in it is (91/95/98) as the ethanol bumps the octane rating high enough and in my experience if the car/bike can take say 28* timing but make no more power that 25* then why run the risk pushing more timing for no reason.
I don't tune e85 with AFR, always in lambda as no matter what fuel you use Stoich value is ALWAYS '1'. Just makes life easier
I have a little test kit for ethanol, very simple to do. Buy a small beaker that can take 500-1000ml. Then put 100ml of water in to make the ethanol go cloudy an then put 500ml of fuel in to make the total of 600ml. Then the maths is measure the petrol at the top - petrol content / original amount x 100 = ethanol %.
Also where the ethanol wins is it doesn't really matter what the fuel in it is (91/95/98) as the ethanol bumps the octane rating high enough and in my experience if the car/bike can take say 28* timing but make no more power that 25* then why run the risk pushing more timing for no reason.