Injection quantity deviation

Hello guys.

I have a strange issue with my 2012 VW Passat 2.0 TDI Common Rail DSG.
The engine is vibrating while at idle and in gear.
I can feel the vibration in the steering wheel.

I have changed engine mounts, gearbox mounts and dogbone, flywheel, all 4 injectors (with used low mileage ones) but still I feel vibration ... but only sometimes..

Now I measured the new injectors and the first 3 will always have a negative value of -0.2-3 while the number 4 will be somewhere between 0.4-0.5

Measured at idle, engine hot, no lights, heat etc.

What I observed is that when engine is COLD and I drive the Injection quantity deviation on piston 4 can go up to 2.8-2.9 ?
Is this normal or it is nothing that you can actually measure properly while driving ?

Thanks in advance.

If you have a genuine RossTech VCDS cable with support, you may want to try asking at their forum. They have a lot of technical know-how available for the asking.

Yeah, will try that also. Thanks for the idea