Ok, So leaving the driveway today in my 09' JSW "73,000 miles", the glow plug light came on and power dropped. Shut off the engine and restarted. Glow plug light & CEL went off but came back on during acceleration and power dropped again. Back at home, pulled codes with Vag Com. P0087 & P0191. Pulled fuel filter first thing. No metal or debris in filter. Approx 1500 miles on filter. Installed new fuel filter, cleared codes and drove. Same thing happened. Checked wiring for splits/cuts and loose connectors. All ok. Cycled both electric fuel pumps with Vag Com. Both working. Dove deep at this point. Pulled FQR out of HPFP. No metal or debris. Checked screen on HPFP inlet. No metal or debris. Pulled fuel pump out of tank. No debris noted around prefilter. Removed high pressure fuel sensor from rail and flushed with brake clean. No metal or debris came out. Removed high pressure rail from engine and checked the regulator for metal or debris. All ok. Called 3 dealers today after preliminary checking. 2 stated probably the fuel psi sensor and 1 wouldn't help. Purchased new fuel psi sensor from dealer. Still has same problem. I'm considering replacing the regulator and hesitant to take to dealer. Any ideas? Sorry this is long but wanted to give as much info up front as possible. There is a ton of info about low fuel psi codes and metal in filter from HPFP but mine isn't shedding metal "Yet". Thanks