 Flex fuel. It's not a fuel at all. It's a system for your car that's related to a specific type of fuel which is ethanol. Ethanol is an alternative corn based fuel that has some of the same properties as a high-octane race fuel but can often be found at normal gas stations. The way that flex fuel and ethanol are related is that flex fuel makes using ethanol in your car much much easier. Running a gas and ethanol mix is an excellent option to safely make a lot more power on a turbocharged car but it can be kind of a hassle. In order to run properly the tune or calibration on your car needs to know exactly what the ethanol to gasoline mix is in your fuel tank in order to properly control the engine and fuel system. The old-school solution of the challenge was to make multiple custom tunes for a variety of ethanol blends then change that tune every time you had a different percentage of ethanol in the tank which is difficult to even know and certainly wasn't accurate. How nice would it be if you could have some kind of combination of sensors, modules, hardware in a tune that could be flexible with one single tune enabling you to put as little or as much ethanol as you want into the tank and then that one tune automatically adjust your vehicle's calibration in real time on its own as you drive and that's what a flex fuel kit is and this is the Cobb Next-Gen Stage 2 flex fuel upgrade package. All flex fuel kits come with an ethanol content sensor. This installs into the fuel lines and measures the percentage of ethanol passing through it then sends a signal to this bespoke Cobb module that connects to your car's ECU and in real time translates the signal from the sensor to the Cobb flex fuel calibration which is delivered by the access port. The ECU then makes use of that information in real time to optimize performance. Running ethanol in your car produces a higher demand on the fuel system so this kit comes with a fuel pressure sensor that allows you to view a custom monitor on the access port to see a live fuel pressure readout. For those of you with the Cobb Next-Gen Stage 2 power package the Next-Gen flex fuel upgrade package is the next step so if you already have this then all you need is that to complete the set. All of this combined makes up the Cobb Next-Gen Stage 2 plus flex fuel power package. Which brings us to the access port. This is the device that delivers the calibration that makes it all possible and you don't even have to get a custom tune. The access port will come with an off-the- shelf map for the Next-Gen Stage 2 plus flex fuel power package that is specifically calibrated and absolutely torture tested to properly run right out of the box along with the ability to see your active ethanol content and fuel pressure as you drive. Which is important to watch because as the ethanol content percentage changes in the fuel that's running through your car so will the power that your car makes. When you're at the gas station and you see an E with the number next to it like E85 or E10 the E stands for ethanol and the number represents the percentage of ethanol mixed with gasoline and that particular fuel option. So E85 equals 85% ethanol and 15% gasoline. Or at least it might because legally it doesn't have to be exact. In fact the ethanol amount in E85 can often be as little as 70%. Which is just another reason why a flex fuel kit is so valuable. You don't have to worry about those variances. The sensors in the tune will figure it out for you. And speaking of the tune, this dyno graph shows the ranges of horsepower and torque that you can expect to experience when using the Cobb Next-Gen Stage 2 plus flex fuel off the shelf map. Using 93 octane with up to E10 our development car made a peak of 307 wheel horsepower and 338 wheel torque. Then without changing a single part on the car and using the exact same tune we bumped the ethanol percentage in the tank up to E65. And the same car made a peak of 332 wheel horsepower and 373 wheel torque. Then a full tank of E85 topped out at 336 wheel horsepower and 379 wheel torque. Showcasing the immediate and convenient value of combining ethanol with our Next-Gen Stage 2 plus flex fuel power package. But a great tune is about a lot more than peak power. The same off the shelf map that you will use on your car is what we used at Superlap Battle to let our buddy Bucky spend an entire weekend blasting around circuit of the Americas with no issues to report. Flex fuel is hands down one of the most effective and satisfying upgrades you can make to a turbocharged car. And the Cobb Next-Gen Stage 2 plus flex fuel power package along with the included off the shelf map make for the ideal one stop shopping solution. Check out Cobbtuning.com slash Next-Gen Flex Fuel to find even more information to reach out to our support team if you have any questions. And of course to order a flex fuel package for yourself.