JohnBoy,
These are narrowband O2s on the upstream.
I already ordered all the parts from digikey. I ordered project boards from Amazon and I ordered a waterproof box and some waterproof connections from Amazon as well (so I can easily disconnect if I need to remove the ECU). I would recommend sourcing a box locally - they are a lot more expensive on Amazon. I won't have time to get to the store this week, so I ordered it so I can get this done.
Also, from the documentation I have these are the expected voltages for the three conditions. This may be vehicle specific, I don't know. Just thought it worth sharing.
Lambda 1 (stoichiometric) 0.45 - 0.5 volts
Lambda 0.8 (lean) approx. 0.1 volts
Lambda 1.2 (rich) approx. 0.9 volts |