This is my personal experience on running E100 ethanol in the Raptors.
**Disclaimer: I am not a professional, i don't know everything, this is just my personal experience and honest opinions.
Background Info: 2013 Raptor 700 and 2015 Raptor 700R with 14:1 diamond piston, Hot Cam 3, +3 TB, Monster exhaust/intake, PCV
Ran both bikes on VP110 for about a year now, ran very well and had 0 problems. Dyno tuned right at 69.53 hp (sea level corrected).
**Ethanol Disclaimer: You NEED a bigger injector, but you do not need fuel pump, fuel lines, etc... Ethanol IS NOT TOXIC, and it is not water! I am from Iowa where ethanol is readily available.
Stock injector is a 12 hole 425cc injector. I switched to a direct replacement Denso 12 hole 850cc injector. Running a stock NGK8E spark plug.
Tuning for E100 ethanol in the PCV with Auto tune is confusing but let me explain... Ethanol likes to be run rich, ethanol needs to be rich because ethanol is 34.8% oxygenated, which means when combusted 34.8% of the fuel you just injected becomes pure oxygen in the combustion chamber. Therefore you need ATLEAST 35% more fuel to make up for the oxygen, but 35% oxygen in the combustion chamber makes your a/f ratio leaner which means you need even more fuel to compensate for that (if you want to make maximum power). So auto tune O2 sensor reads lambda, 1 lambda = stoichiometric and converts it to a gas based a/f scale where 14.7 is stoichiometric (emission safe). Now when you are burning E100 ethanol, 9.05 a/f and 1 lambda is stoichiometric. So when you are burning ethanol and the auto tune reads a lambda value of 1 and gives you a a/f ratio of 14.7 on gas scale, you are actually running 9.05 a/f ethanol ratio. For maximum power on ethanol you are going to want betweeen 6.8-7.8 ethanol a/f ratio which converts to gas scale at 11.0-12.75. Therefore in the power commander I am running my auto tune a/f ratio at 11.5. Going from a 425cc injector to 850cc injector i assumed my fuel map would actually show negative or close to 0 numbers because the injector has so much more flow. However after auto tuning my fuel map with E100 and 850cc injector, my new fuel map is almost the same as what it was to my dyno fuel map on VP110 race fuel.
**Disclaimer: I am not a professional, i don't know everything, this is just my personal experience and honest opinions.
Background Info: 2013 Raptor 700 and 2015 Raptor 700R with 14:1 diamond piston, Hot Cam 3, +3 TB, Monster exhaust/intake, PCV
Ran both bikes on VP110 for about a year now, ran very well and had 0 problems. Dyno tuned right at 69.53 hp (sea level corrected).
**Ethanol Disclaimer: You NEED a bigger injector, but you do not need fuel pump, fuel lines, etc... Ethanol IS NOT TOXIC, and it is not water! I am from Iowa where ethanol is readily available.
Stock injector is a 12 hole 425cc injector. I switched to a direct replacement Denso 12 hole 850cc injector. Running a stock NGK8E spark plug.
Tuning for E100 ethanol in the PCV with Auto tune is confusing but let me explain... Ethanol likes to be run rich, ethanol needs to be rich because ethanol is 34.8% oxygenated, which means when combusted 34.8% of the fuel you just injected becomes pure oxygen in the combustion chamber. Therefore you need ATLEAST 35% more fuel to make up for the oxygen, but 35% oxygen in the combustion chamber makes your a/f ratio leaner which means you need even more fuel to compensate for that (if you want to make maximum power). So auto tune O2 sensor reads lambda, 1 lambda = stoichiometric and converts it to a gas based a/f scale where 14.7 is stoichiometric (emission safe). Now when you are burning E100 ethanol, 9.05 a/f and 1 lambda is stoichiometric. So when you are burning ethanol and the auto tune reads a lambda value of 1 and gives you a a/f ratio of 14.7 on gas scale, you are actually running 9.05 a/f ethanol ratio. For maximum power on ethanol you are going to want betweeen 6.8-7.8 ethanol a/f ratio which converts to gas scale at 11.0-12.75. Therefore in the power commander I am running my auto tune a/f ratio at 11.5. Going from a 425cc injector to 850cc injector i assumed my fuel map would actually show negative or close to 0 numbers because the injector has so much more flow. However after auto tuning my fuel map with E100 and 850cc injector, my new fuel map is almost the same as what it was to my dyno fuel map on VP110 race fuel.
