Speedy46

Most likely in your case just VW feature. If it's intermittent than ok, else could be the sign of alternator pulley gone bad (you could got a vibration too). Good advice would be to almost never turn the full lock. This will prolong life of steering rack.

You simply get used to softness of steering very quickly. It’s a sort of philosophy behind degree of servo force some manufactures put on steering. Recently removed accessory belt on my 1.9 tdi and went to test drive - servo was off and the steering is so stiff you can barely move the wheels. You can always inspect belt tension and other accessories but I think it's just the way VW group design things. Winter tires and reduced pressure also contribute. Steering is not super smooth in city but it's not annoying. On the other side, on motorway I think driver get a better pace.

Mine 1.9 TDI 85KW PD suffer from vibration and booming noise between 1400-1800 rpm. Injector number 4 reading is close to 1.0. Sum of other three injector’s readings is close to minus 1. So, ECU is trying to equalize injection. In my opinion ideal situation will be where sum of readings from two injectors are equal to sum of values from other two injectors – two positive against two negative readings. Also, after removing the engine cover I spotted worn exhaust camshaft’s lobe on 4th cylinder. Could this be related to injector’s readings on injector number 4? From my point of view you can expect DMF to fail from problem(s) originating to engine – in other way, you cannot expect DMF to make faulty injector or engine.