Cleaned out the throttle body. Previously thought this was nonsense, had done it and seen no difference. This time on the 4gr engine it worked amazing. It had issues idling nicely, too low, trembling vibrations, rolling back in drive, not smooth from a stop etc.. It was pretty gunky, after cleaning the idle was screaming at nearly 2000rpm and didn't really sort itself out. Had to disconnect the battery and let it relearn but after it is perfect, holds 700rpm no matter the load.
Anyone with Toyota lexus GR v6 engines should try it if you have a rough or low hunting idle.
Also got techstream running and did some setting changes.