i hear of people installing trhese things... but whats the deal with them?

 

it read the air/fuel mixture of a EFI engine. they installed them for the autometer air/fuel gauge or if the old one in the EFI cars is f^)king up

 

everyone is installing em so they can tune there carb with out having to take it somewhere that has a the exhaust probe.

u can use a gauge hooked up to it or also a digital volt meter can be used too using the mV reading

i got mine waiting to be welded into in the exhaust..

 

It reads the amount of oxygen in the exhaust and generates a voltage signal according to the amount. Too much oxygen (engine running lean) means that their isn't enough fuel being mixed in the combustion chamber. This will create a higher voltage. If their is too much fuel (engine running rich) then the voltage will be low.

 

does anyone have the voltage reading we should be getting? i would search for it cus i know its come up a lot int he last few weeks but i cant..

i remeber it should be around 700-650 mV at an idle?
and a little less with the lights on?