Wide band Oxygen sensor with gauge
Wide band oxygen sensor
A heated wide band oxygen sensor coupled to a gauge can read a very large range of air fuel ratios.
They are typically off the shelf stand alone units that will work in any gasoline powered vehicle. They are some what price prohibitive since they typically sell for around $250 and up.
This mod could be used as an "off the shelf" answer for those looking to install a "lean burn indicator".
Instructions for mod
This is a fairly easy, straight forward mod. Normally you buy this as a kit, with the sensor, gauge, wiring and instructions. The most difficult part of the mod I see for the average person is it requires you to install a weld in oxygen sensor bung into the exhaust before the converter.
|User Name||Car Make, Model, Year||Cost of Mod||Time to Perform Mod||MPG Before Mod||MPG After Mod||MPG improvement guess||Instruction Link|
|oil pan 4||Camaro||About $200 USD and up||est. 1 Hour||N/A||N/A||A proper slightly lean tune could give up to 20% better FE over just winging it||User mod detail or measurement detailed data|
|oil pan 4||Chevy suburban 454||About $200 USD and up||est. 1 Hour||6.5mpg||11mpg||Replaced a defective very rich running carb with a working one then tuned for lean burn||User mod detail or measurement detailed data|
Problems / Consequences of mod
Use the Air fuel ratio gauge to find a lean sweet spot. You can get better fuel economy and you will know if your fuel induction system is not performing properly.