Here is another application for the car that has been gaining some serious ground lately. The need to implement full Flex Fuel capability on a variety of platforms has the tuning community all a buzz and I decided to develop this device for one of our local shops. This gauge goes beyond just outputting a 0-5 volt signal for use by the cars ECU, but also integrates the uLCD-220RD display and incorporates a barometric compensated boost gauge to make it more useful as an every day device.

I will be creating an open source version and I will be updating this thread with the code and the schematics soon so stay tuned!