If you have access to E85 fuel in your area then our Flex fuel upgrade should be one of the first performance upgrades on your list. Our system utilizes a true ethanol sensor and includes everything you need to quickly and easily install the components in about 1.5 hours. After we update your engine calibration to utilize the signal from the ethanol composition you can use gasoline, E85 or any ratio of the two and the ecm will automatically re-calibrate to maximize your performance for the amount of ethanol detected. Includes ethanol sensor, flex fuel hose, wiring harness, four flow matched/balanced Bosch 465cc EV14 injectors, handheld tuning system and custom flex fuel tune. On E85 fuel we typically see peak power of ~ 190hp / 200lb-ft on stock vehicles and higher gains are possible when combined with our SuperGT14 turbo upgrade.