hey guys, I'm going to reach out here and see if anyone has experience with an issue I've been having with my '12 1.4 turbo. I keep getting large negative fuel trims, some days hovering around -5 and some days reaching -1. On top of that the car keeps pulling timing like crazy which im guessing is tied into what's causing the fueling issue. Ive thrown tons of money at this since seemingly pulling fuel is only caused by a few things. Now I don't know where else to go, first the pressure disc in the cam cover blew for the 4th time and I came across the "cruzekit" fix of which I did and I also pulled the charge tubes out down to removing the intercooler to clean all the oil out that was everywhere. The negative fuel trims were present prior to that but none of the KR that is very easily prevalent while driving now even when not really loading the car up. it will create a bobble feeling. I found that the cats were bad so I switched too the zzp downpipes and intermediate pipe. That didn't sort anything out so I changed the upstream O2 sensor bc it looked lazy, bt no change so I did new plugs and a new maf just moving along down the list of potentials. I changed out the pcv line from the manifold to the turbo a long with the MAF wondering if oil was maybe the culprit. I pulled the injectors today and pressurized the system and none leaked. I did a resistance test and all 4 injectors were the same at 13.3. I even capped off the evaporations tube to check that as well with no change. If the fuel pressure sensor is accurate on the car then it is getting the requested fuel pressure. According to my boost logs its showing im getting commanded boost, if those are accurate. Ive never ran a boost leak test because of that reading. I do a lot of tuning on LS cars and this thing has just been baffling me.It has the trifecta tune on it currently and Im going back and forth with them bc the ECM won't allow me to put the car back to stock as of yet so I can then tune it with HP. Ill include some logs that may point some things out or maybe get directed to what parameters to watch that im not? Thanks in advance for any knowledge.