Update for u all, after being told by the dealer they would call in a weeks time after they had spoke to Nissan about the warranty issues what do u think happend ?.... You Guest it nothing , so I called the dealer , 3 times ... 3 times they didn't return my call !!!!!! So fuck them I went and called Nissan Australia ,turns out they they had not even contacted Nissan about the warranty issues. So I lodged a complaint with Nissan and gues what ??? The dealer returned my call and are being ever so helpful now . I have to take the nav back this Friday so a specialist technition ( apparently) can go over the truck with me and inspect all the problems...
This afternoon i disconnected the snorkel and the vibration is gone , hook it up again and it vibrates the shit out of the vehicle ....... So it is definitely a snorkel issue . On inspection the pipe from the filter housing back along the inner guard is tiny and extremely restrictive .