I didnt hear any knocking or anything out of the ordinary when I hit 11. But Im not gonna push it. I know those injectors are near maxing, if I was barely in stoich while hitting around 10, I should be ok around 7. Just common sence.

 

If you really want to know if you are running lean or rich invest in a wideband. Its expensive but alot more accurate than the narrowband.

 

<----already got one installed right here