This how they should look when properly tuned
Not saying yours is properly tuned- only pointing out lean is favorable for idle/cruise situations.
The black ring around the outside, clean, unbroken, is important. Cant see yours up close enough.
If you don't have a wideband drop what you are doing and buy a wideband. You cannot diagnose or maintain any turbo engine without a wideband it is very difficult
I would
1. wideband
2. Pressure test
3. Verify maf placement and that the bypass is recirculated properly like an OEM system using a MAF