Its supposed to do that ...its a narrow band 02 sensor,all it knows is above 14.68 and below.it should go rich at wot.
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Its supposed to do that ...its a narrow band 02 sensor,all it knows is above 14.68 and below.it should go rich at wot.
Narrow-band O2 cuts off when in OL , typically they will bounce from 14.7 to 15.1 or so .
You go from CL (Closed Loop , O2 used for fueling) at idle to OL (Open Loop , no O2s) , PE (richen) and if DFCO is on you will see lean when off the gas and Cat Over Temp will cause it to richen sometimes , after some hard runs .
You need a wide-band .
yep, narrowband is useless for tuning. i tapped my exhaust right after the ORY and got a wideband o2 and a plx devices box. its nice to see what your running. probably saved my engine right after my header install, when i ran super lean. without it i would have loved all the power it was making right up till she locked up.
Thanks for all the advice on this, but things have changed and I am now selling everything but the long tubes.
http://www.ls1truck.com/forums/sale-...mpliments.html