ive got a knocking noise thats sounds as something is really loose it happens on some bumpy roads and if i pull away to harshly i can hear it knock just from the force from the clutch when i had my mot the guy heard and checked everything was tight underneath and didnt have a clue its not the dogbone i have got rid of a different knocking noise by tightening that up but i can hear a whooshing exhaust blowy kinda noise in the transmisson tunnel so no idea if it has anything to do with that thanks!