Okay so this is a saga, but I NEED your help. I have an 05 passat TDI Wagon. First off I am a homeless vet living out of this car, was spending my summer in the white mountains hiking, and had planned on heading back home to Va in the fall. Then it tarted kicking into limp mode. Any demand for power is met with limp mode. Car still revs, and when on flat ground can gain speed. I researched my a** off for the last two months and replaced N75 and all my vaccumn lines first. When this did not solve the problem I broke down and took it to a shop (who originally claimed to have VCDS, but in fact did not) cost $66 to hand me a list of codes. Based off the codes I have bit the bullet and replaced MAF sensor, thermostat, coolant temperature sensor, intake flap motor, glow plugs(7v), and even spliced in new glow plug wires. All codes are gone minus underboost and constant/immediate limp mode. Egr was deleted by the previous owner, so that code is always there. Went out and got a vaccumn tester. Vane actuator tested somewhat low, so I removed the turbo and adjusted it to start moving about 3 and hits the stop right about 20 (did not move stop screw) as I have read on here. I'm headed to Home Depot now to get some stuff to make a boost leak tester (I have one of those 12v tire air pumps). BTW I'm doing all this in the Biddeford, Me Walmart parking lot where Ive been parked for a month and a half. Beyond that, I'm lost. My dog and I live off of $1,200 a month from my disability and have already spent over $800 from my Oct check trying to fix this. MAP sensor maybe? Wouldnt that throw a code? Tandem pump? Hoping I can find what I need to do a boost leak test and that's it, even though idk how I'm going to afford new vw hoses. Any other suggestions or help would be GREATLY appreciated. My daughter's birthday is at the end of Oct and I promised her I would be there. Plus it's starting to get really cold at night.