Just worked my dogbone mount today. Used the Powerflex kit of two polyurethane bushes
Upon removing the old rubber bushes from the mount, the large one was almost torn in the middle and soft as toffee, the small one (front side) intact.
I've used the large polyurethane bush and the smaller OEM rubber bush, as there were some horror stories with vibration when using full poly mount, and the Powerflex "small" bush was almost twice the thickness of the OEM. Greased very well with the grease included in the kit
+ Wheel hop has disappeared altogether
+ Wheelspin has been slightly reduced
+ Acceleration has very slightly improved, but it may be an illusion
+ Gear change much smoother on downshifting, almost unchanged on upshifting
+ The feel of engine rocking back and forth (I've felt it would come over the dashboard sometimes) has disappeared
+ Surprisingly, engine starts quicker!
the starter motor cranked for about 2 seconds previously, now it starts in half a second. May be also an illusion
- Steering wheel vibrates slightly at idle. It's not harsh, it can be felt just in the wheel, not dashboard. Slightly above current idle (let's say around 800 rpm) the vibration disappears altogether
+/- The clutch should no longer be slipped as I've done during the previous 2 1/2 years... if I try to slip it slowly, it rattles. If I release the clutch quicker, it's fine, no vibration, nu judder, no
problem at all.
These being said, I expect some improvement as the bushings settle. If not, the idle speed will be raised to about 800 rpm via VAG-COM
~Regards
Nautilus
but give it a good few hundered miles and you'll be more than happy with it. Even my wife's said it drives better 
