Had a 2012 100ps FWD MK7 in, that would hit 2.6 Bar boost, then go into limp mode, then push the gas twice & its Ok again for a minute. No DTC’s were set. To cut a long & very boring story short, the new turbo was actually recon & the dowel that locates the VNT mechanism into the turbine body was missing & it was mis-aligned. a part of a broken 3.5mm drill bill stepped in a dowel & all was good. Actuator wise, the G number was G32 & this was for a front wheel drive, i’m told the rear wheel drive actuators differ in the arm cam position or sweep., so possibly, a rear wheel drive utilises a different G number.