disconnect your rear lambda sensor and see how u get on
either your rear lambda reading is wrong or you have the best cat in the world
the sensor should pulse above .3 volts otherwise it is faulty - your rear lambda is failing to pulse above 0.06 volts which to say is lean is an understatement, the average voltages for both lambdas should be around .45 volts
your front lambda looks fine but it needs to pulse every second
as for air temps i been doing some research on this and i think it is incorrect due to the heat off the head, i cant believe the air being sucked into your head is constantly 25C when the engine is warm, i seen it at 32c when ambient temps outside have been 5c
now when i did my custom pipe then the temps came down a bit as i moved the air temp closer to the airbox
this is proving my theory that this engine hates cold weather [ice cold air] and seems to run better in milder conditions
