Return of the lambda
 

I had replaced my O2 sensor with a wide band LM1 and used the AF meter to adjust the newly installed CIS on my 83 SC. I have been operating it that was for about a month and had it running well, I thought. Yesterday I put the stock O2 sensor back in and reconnected the lambda computer. Went from running good to running great. Better throttle response, smooth steady idle, I am now a fan of the stock CIS setup.