Air/Fuel ratio meter

[Vad1k]

It very simple

http://www.redline.lt/articles/specialfeat/afmeter.htm

[ppwazzup]

Now we just need to find the schematic to make a simple voltage converter so it will take a voltage of 0-5 volts, multiply it by 2 and add 9. Then display that. This would be much more helpful in the tuning of our cars and cost much less than buying a wideband reader LOL

Matt