ok i've been reading alot of threads about o2 sensors. i'm reading alot of "not accurate after mods" stuff. does this mean not at all or just not at wot. if not at all then what do we do install wide bands with controllers in to both side and hook those to our ecu or what? if they are not accurate then why have them at all? oh and what about the e85 cars and truck what do they use because the e85 needs a diffrent afr than gas. so do those have diffrent o2 sensors? and what about the holden cars with there lean cruise how can they go into lean cruise if the sensors not accurste for the leaner mixture? i understand that the linearity of the sensor sucks hints the reason the don't work just confused on what we can do about it as far as everyday close loop driveing. do mods and bigger engine not matter during close loop normal driving at 14.7:1 afr. just confused is all. and for the record cause i seen a few get this wrong higher mv's on a narrow band o2 sensor is richer and lower mv's are leaner. as in .001 leanest and 1v richest.
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