Crazy O2 readings: offscale rich or super lean?
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Crazy O2 readings: offscale rich or super lean?
So I was using my Predator during a nitrous run today and the front O2s went to .050 & .040 in the middle of the run. I was like holy **** and shut the car down thinking I had a fuel noid faluire. Fuel noid checked out fine and their was still some fuel in the nozzles so I got thinking, the Predator only reads three places with no dicimal point (actually read 050 & 040). Could this be an off scale rich condition? The car didn't loose any power and it didn't detonate at all. What do you guys think happened? I need to get my damn LM-1 set up in the car.
BTW: The car's O2s were in the low .800s right before this happened because it always goes lean for a quick second when I first hit it.
BTW: The car's O2s were in the low .800s right before this happened because it always goes lean for a quick second when I first hit it.
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It would read higher if it was really rich. If you were THAT lean, something bad would've happened by now. Did you try it again after this happened? Might've just been a glitch in the O2 readings? Sometimes they do crazy things...
#5
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You went dead lean and got lucky. This is a good example of why I prefer a dry kit. No fuel 'noid to worry about. MAF sensors and injectors are far more reliable in my experience.
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I don't know how lucky I got yet, found some metal in the oil the other day. I ran a 5177 for over a year but I was having to run my N/A tune way rich to get the car to not lean out on the nitrous. I just ordered a dyno tune switch that shuts the nitrous down in a lean situation.