What makes E85 Special? RE: Rule of thumb for E85 compression ratio CWB1 (Mechanical) 28 Feb 18 14:17. This alternative fuel is available in 41 states as well as Washington, D.C. Although I have not done it myself (no local source for E85 and the particular race engine that I have does not have parts available to raise the compression ratio enough), I have been told by others who build race engines that you can get away with things by running an engine on E85 that you could never do ⦠The use of pure hydrous or anhydrous ethanol in internal combustion engines (ICEs) is only possible if the engines are designed or modified for that purpose, and used only in automobiles, light-duty trucks and motorcycles.Anhydrous ethanol can be blended with ⦠Unless youâve been hiding under a rock, youâll probably know that E85 is a fuel containing 85 per cent ethanol and 15 per cent gasoline. This allows a turbocharged engine to take more boost within a safe operating range without damaging the engine. Flex-fuel vehicles are alternative fuel vehicles designed to run on more than one type of ⦠This systems allows the vehicle to be "flexible" in terms of what fuel it can run, either pump gas 91-93 octane to E85 or any percentage in between. If your wondering what E85 is, it is a blend of 85% Ethanol and 15% unleaded gasoline. No. A car running on E85 has about 80% the efficiency of the same car running on gasoline. ⦠Research from Cornell University suggests that it requires 140 gallons of fossil-based fuels to harvest a single acre of corn. Some critics have actually said that it is a "negative energy source," meaning that more energy is required ⦠Basically, E85 is cheap race gas. If we blend 5 gallons of 91-octane gas with 5 gallons of 100-octane race gas (both unleaded) the result is 10 gallons of 95.5 octane gasoline. At first one would think that using E85 would make little sense being that the BTU rating of ethanol (also called Ethyl Alcohol) is less than that of gasoline, meaning it has less British Thermal Units (energy) per molecule, but that is not true.Each fuel has its own BTU rating just like Natural Gas, and even though ⦠It is blended with premium cut alkylate and is blended at 85% Ethanol regardless of season. This is becoming the most talked about flex fuel on the market. E85 vs Gas For Performance. Many OEM vehicles stock fuel lines will be able to flow enough for 500-600 whp, but over that, growing the lines will probably be in order. E85 Ethanol.â Almost 20 million vehicles in the United States come off the assembly line as flex-fuel, meaning they can run perfectly well on any mixture of gasoline and ethanol, up to E85 (which is actually 51 percent ⦠âIf you have an old fuel system that isnât in good shape, E85 can wash out all the gas residue and dirt in the system and push it into the carburetor. Ethanol explained and why most cars don't use it. The main thing you are getting with E85 from a performance standpoint is pre-detonation resistance, meaning you can run more timing. Thatâs the spirit. It may be difficult to find a gas station that carries E85. Make it easier on people to know they can put the higher octane, domestically-produced fuel in ⦠âE85 is like an industrial cleaner,â says Benoit. With the right tuning, it is possible to make nearly 100w HP difference on E85. You have to burn more alcohol to make the same power as gas. As the new-vehicle market has shifted away from E85 compatibility, the Renewable Fuels Association has switched its focus to increasing the "regular gas" blend from 10 to 15 percent. E85 (or flex fuel) is a term that refers to high-level ethanol-gasoline blends containing 51% to 83% ethanol, depending on geography and season (see Fuel Properties and E85 Flex Fuel Specification).It can be used in flexible fuel vehicles (FFVs), which are available from domestic and foreign automakers. Read on to learn about the definition of e85 gas, and find the Evansville local E85 gas prices or the E85 gas pricing that you've been looking for. E85 continues to increase in popularity on the merits of sustainability and reduced emissions when compared to pump gasoline. E85 synonyms, E85 pronunciation, E85 translation, English dictionary definition of E85. Since the advent of E85 in the early 2000s, people have been using it as go-fast juice due to its intrinsic knock resistance and cooling properties. Visit ⦠E85 is an alternative fuel that has gained a foothold in the U.S., particularly in the Midwest, but not every vehicle can use this fuel. Not only is it a much more consistent blend, it also makes more power since the âgasâ portion is a premium alkylate, not a low grade pump gas. Use the map to locate the nearest E-85 petrol station to where you are, it is based on your current geo location. Here is a map of stations where you can buy E85 fuel nearby. As Blume, an expert in high-octane alcohol fuels, explains, an easy way to tell if a vehicle is flex-fuel is the yellow gas cap.Other telltale signs could include: Badging on the rear of the vehicle (picture at right). I need to get some E85 gas right now. ... and a decent amount more boost and timing with e85 or race gas. With the aem ems you have a pump gas tune with timing,Afr,boost based on that gas. Today, a number of known flex-fuel benefits exist. One thing to note is that pump gas itself can also have a percentage of ethanol in it as well, 0-15% depending on where you're getting the gas, as some countries have not ethanol in their pump gas. While it might seem that blending fuels for octane would be a straight percentage mix like with gasoline, E85 works a little differently. ... Ethanol also has a higher thermal efficiency meaning when it does ignite, the temperature of the combustion is lower compared to pump gas. Over the past few years, you've likely heard increasingly more about flex-fuel vehicles, even if you didn't fully understand what they were. Meaning efficiency takes a dump. Not quite environmentally friendly. It also happens to be the most available flex fuel at gas stations, which leads to its higher usage. The gains do not stop there either, E85 enables the limits to be pushed to levels typically only seen with race gas! E85. May 9, 2020 - E85 is usually cheaper than regular gasoline, but is also less energy-dense, which can lead to a reduction in gas mileage. Convenience is an issue, too. Depending on how you use your vehicle, switching to ethanol may or may not be the right choice for you. What does the number in flex ⦠If you compare the performance of gasoline and E85, the latter undoubtedly produces more power. With use of E85 ethanol and appropriate tuning, we saw a net gain of 64 WHP & 38 WTQ over 93 octane gasoline! n. ... (JBPHH), officially opened March 22, 2012, enabling government gas cardholders and their government-owned flex-fuel vehicles to fill up with E85. The fuel brings a dramatic improvement to the timing of a car without the use of methanol or race gas. As of August 2009, most of the vehicles that can use it are American---but some other makes have gotten aboard the ethanol train as well. GM is going to make sure all their FFV models have a yellow gas cap, which will let you know that it can accept the E85 blend! Ethanol vs gasoline, which type of fuel is best for your car's engine with Scotty Kilmer. While ethanol does burn cleaner than gas, meaning less smog, flex fuel cars still produce roughly the same amount of greenhouse gases as their fossil fuel counterparts. Illinois had 132, Missouri 63, Iowa 56, and South ⦠As of November 2006, Minnesota had the most E85 fuel sites, 300. Many say it is equivalent to 105-110 octane, meaning it has much higher knock-resistant properties than pump gas and is usually substantially ⦠Meaning the fuel lines will need to be bigger, the pump will need to be upgraded, and the fuel injectors will need to grow as well. Putting E85 in a vehicle not designed for it is harmful, however. Let's say you run 23 psi,15 deg on pump and 30 psi, 18 deg on e 85 the ecu would adjust Psi,Afr,timing between those 2 points base on ethanol percentage.