Help

So I just bought a 15 328d and around 1300 rpms it feels like it’s bogging. Then around 60-80 mph a consistent “womp” has anyone else had something similar if not exact? I was thinking it was mounts/ injectors but at this point I feel like it could be anything on the front end. I haven’t had time yet to put it on a lift but plan to, just wanted some help on where to start. Thanks!!