Well, that was kinda fun. Spent 2.5 hours pulling the old turbo off DSOL, after a break in the rain (we got over 8" in the past 30 or so hours). I'm not 100%, but at last 70% sure it's one of the junkyard VNT17's I was lucky to come across. Lucky, until I realized it was overboosting, and as of late, putting the car into limp mode.
I keep a spare VNT17 and 11mm IP on hand for those "oh $hit" moments, and it came in handy today. The spare has the electrical connector for the VNT actuator; it came from my mom's since sold 2005 wagon, so it had maybe 6-7K miles of actual use since I bought it?
I did a boo boo and forgot the bolt that goes above the oil return line, but I've forgot it before, and I had no desire to loosen up all 8 nuts to get it in. Otherwise, everything got torqued to spec, doing it ever so carefully, as I've had studs strip inside the head before.
Took the car for a test drive with
@burpod 's latest and previous tune revisions, and if anything, it ever so slightly underboosts. Even one short acceleration stint to 95, it didn't overboost like crazy like the old turbo. In fact, on my ColorMFA, I don't really remember seeing the turbo go over 22 or 23 even. Before, it was reporting up to like 27 psi at times, or any hard acceleration was easily going over 20. Now, it mostly stays under 20, under 10 even, but the car still hauls ass. It all worked out, since I'm sidelining DSEL until I replace a rear right wheel bearing/hub (and people ask me why I have two identical Golfs).
Oh, and on the same car - finally got smart and ordered a rebuilt Bosch 120A alternator from
@Mozambiquer . My third Autozone alternator hasn't failed yet, but I'm not putting that past it. In a perfect world, the only Autozone part on this car will be my H7 battery.