sr20 lean (20+) cold idle reading

[Nikzilla]

When my SR is cold, my wideband shows it idling really lean (the gauge is maxed out at 20+).

If I blip the throttle though, the afr goes back to normal, until it settles into the idle again.

Under boost though it reads nominal (11.5-11.7), and it idles at around 14.7 when warm too.

Is this just a sensor thing, or is my sr really cold idling lean? It sounds fairly healthy.

s13 SR20DET Blacktop
GlowShift wideband with bosch wideband sensor.

[jr_ss]

How old is the sensor? Have you free air calibrated lately?

[aga]

most likely your narrowband is old and dying, and it takes the heat of driving around to make him operate. if you want a cheap alternative, take your simulated narrowband signal to the ecu, replacing the stock one, and see if that makes a difference. if it works ok, keep it that way. zero $ solution.