Thanks all. I did get a set of OEM injectors back in early June and installed them. Paid $100 more for them over Bosch. I expect this set will last a very long time as I only drive this car no more than 3k miles per year now. I went through it and replaced the HPFP and fuel pressure sensors previously and now was replacing the LPFP, LPFP control module, and these injectors. Mostly because for the past few years my high pressure was only being requested to produce 110 bar rather than the 140 bar target my file should be targeting. This all began when I switched back to my GIAC H.O. K04 file from a less than two year stint trying the Driver Motorsport K04+ file. Because I suspected it to be the tune...I had spent many hours with GIAC talking about this and sending them data which I could not see any reason why, and they too saw nothing that would do this. Anyhow, it just came down to "replace all that was fuel related", cross my fingers and see. And yes, the first drive with VCDS connected showed the HPFP target was indeed in the high 130 bar realm again. I suspect it was the LPFP and it still could've been the injectors...but was weird because data showed the LPFP with the Torqbyte PM3 kept pressures in the low-pressure-side to just below 4 bar by the time it reached redline. I had the spare control module which I swapped in while bypassing the PM3 previous to replacing the LPFP and injectors and that did not fix the pressure targeting issue. So yeah, was either the LPFP or the injectors causing the 110 bar target. I suppose it could've been injectors leaking...but the data never showed the HPFP actual pressure to drop more than 10 bar from specified...but I suppose it could've done something weird and I just never saw it in the data. Anyhow, all is finally sorted and I have been able to put this issue to bed...phew.
