Just wondering if anyones successfully done this on the PD170? After reading the threads for the b5 and b6 a4's with the 1.9 and 2.5 tdi lumps I've been wanting to do this with mine. I know for sure its the case that the vanes aren't free to move properly, i'm getting overboost and limp mode in 3rd 4th or 5th if im over 3000rpm with my foot down. Under 3k the car still pulls well, after that it feels like its struggling as if the DPF is blocking up (which was my initial thought as to what the problem was, but after a long drive it was no better). I've also played around with the actuator to get it moving a bit more freely and the car instantly responded better but after about 20 miles or so it was back to normal. My problem with this method is the following, on the guides for the B5 and B6 engines the turbo is mounted lower than the exhaust manifold. Whereas (at least im fairly certain) on the PD170 and most likely the PD140 too, the turbo is mounted above the exhaust manifold. So am i right in saying that if i was to put mr. muscle in, it would leak down into the exhaust manifold and potentially into the engine too? And as mentioned in those threads it's only safe to use on the cast iron (Exhaust side) of the turbo and nothing else. I really don't fancy trying to take the turbo off myself, seems like a hell of a job. Does anyone have any other (cheap) suggestions if this is definately not an option?