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Old question, factory oxygen sensor?
Posted: Thu Mar 22, 2018 2:12 am
by shanegarrison
I have a 86 Nissan 300zx with a lot of modifications. Big turbo, big injectors, big cam, Nistune MAF sensor, AEM wide band. I know the answer is here somewhere. I've seen it before but can't find it now. Will the factory o2 sensor work against me when trying to set injectors for a certain air/fuel ratio? Should I just not use the factory o2 sensor?
Re: Old question, factory oxygen sensor?
Posted: Thu Mar 22, 2018 11:42 am
by Matt
If the O2 sensor is working fine (shows lambda @ 14.7:1 AFR), then at cruise when you have your base mixtures set correctly, it should not 'trim' against your intended tune. Your trims should be near 0% at cruise (say 2000rpm light load driving)
Re: Old question, factory oxygen sensor?
Posted: Thu Mar 22, 2018 11:50 am
by shanegarrison
Thanks Matt, I appreciate the help.