have questions on new wide band

[MECHAN12]

i just finished in installing my new mxt-l wide band today.
so here is what i found and my question. at idle it shows 22.4 afr and 22.2 at cruse when giving it gas it shows 19-20 at wide open throttle it shows 11.8. my question is
if i had a air leak would it not throw a code on the ecm with the readings i am getting
or do you think i have a bad gauge
donald

[mr.prick]

Check the fuel type setting on the info tab in LM Programmer software.

[MECHAN12]

ok i will check that
thanks
donald

[joecar]

An air leak will not necessarily cause a code.

[MECHAN12]

well i checked what mr prick said and it is set for gas . looking over the bung weld looks like on the back side of it might have a pin hole so tomorrow i will go to a friends and weld it in my self
thanks for the reply
donald