Thanks for the replies, I should have went into more detail. What I want to do is install a 02 sensor in the pipe of my 250. I am still have a vibration/miss/backfire problem at higher rpms. I believe it a lean condition, at low speed it run great, very clean, and responsive. I have a hand heald o2 sniffer that reads from the tail pipe, but I don't believe its acurate when driving due to the way it sniffs. Any air blowing over it changes the way it reads. I have check the aftermarket gauges and they are way to costly for my playing around.
I could just jet the carbs up and see, but that takes the fun out of tuning and checking!
If I did install a sensor, would I have to power it up or do they create there own voltage? And if I read the posts right .1 to .9 volts with .1 on the lean side .9 on the rich side, then .45 would be about right?
Joe
