Longterm Fuel trim High at idle

[FiveLeeter918]

honestly at a, loss at this point, no more P0131 and P0151. however fuel trim is still high at idle but reaching perfect + or - 5%, fuel trim underload. idle is just high, which still makes me think its a vacuum leak, however cannot find it leaking from anywhere lol super frustrating.

I did check the intake vacuum hoses, by remove them one at a time and monitoring LTFT and STFT, they didn't give me the numbers i was looking for, but also didn't correct the problem. I'm going to boost leak test the system, put it under 8psi of compressed air and see if it finds any pin holes I'm loosing or pulling unmetered air in from.

Go ahead and shoot me a fresh log, if it's only high at idle but fine cruising and WOT, we can continue the tuning process and I can do a deep dive on the log to see if I can give you any additional points to check.

Do you have a catch can by chance? If you do, might try removing it and putting the factory pcv lines on to rule it out as well.