u/Distinct-Barber-4352

I have a 06 Mazda 3 hatchback. I preformed the classic 2.5l swap . I stuck with the original 2.3l head . She running great. But I’ve noticed the LTFT is locked in at 20.3% . I have a check engine light . Apparently she’s running lean . I found 0 vacuum leaks . Purge valve is functioning properly. MAF sensor reading is good . I do have a cold air intake and a catch can installed only basic modifications I have done to the engine . I also provided a picture of the data stream at idle . Can anyone help me with this problem. Do I need a tune ? To get this fixed