PaulJ , my understanding is the NVH acts as a strut between the BB and gearbox. For me it certainly helped eliminate a feel of backlash between the BB and front of the car - I have no regrets having had it fitted ( by the factory ). The drive feels more controlled and smooth.
That said I had the new compensator fitted at the same time so I didnt have a true A B experience , but I think that the compensator is a different issue.
