New Engine mount rattle/knock noise

[Fretzy]

Hey guys I've had a vibra technics top mount fitted and since it was fitted I get this faint rattle/knock noise which sounds to me like its the internal engine components doing there thing its so weird. Basically when I apply pressure to the accelerator as the speed increases so does this noise and its only between 2.5 - 3k rpms no noise at all on idle when I rev the car up to the RPM it makes this noise on cant get my head around what it could be beside this mount I've started to convince myself I got a bearing or rod knock 😆 i have heard that uprated engine mounts can make the car sound and feel different and that you can hear the engine working more due to stiffness etc?