With the Bpower Flex Meter quickly and accurately obtain the desired/configured fuel mixture in your performance project (E85, E50, etc).With the app, you can quickly calculate the exact amount of ethanol and gasoline you need to supply to obtain and maintain the desired mixture. Entering only the following parameters:-Quantity you want to supply-Current amount in the tank-Legal percentage of ethanol in gasoline-Desired blend (E85, E50, etc)The Bpower Flex Meter module is only compatible with the Continental ethanol sensor 06K907811BEnjoy!!!