Snorkel Noise Solved

Thanks to a tip from "Terryfied" (onya Terry) I seem to have solved a serious noise
issue on My 99 TD 3.0 Jack. Best described as a "whipper snipper" going hard, when the engine was under load and over 2000 rpm, the noise was on the passenger's side with nairy a hint out the starboard window. This suggested ruling out the turbo so I started hunting around the exhaust system. But Terry put me onto the intake as a possibility; specifically the snorkel (fitted 7-8 months back in metro Adelaide). Taking the ram head off, I found a huge washer (a restrictor in fact) . This washer would have cut the snorkel intake area by at least half in my view ! (will do the maths later) - I whipped it out and the "serious and somewhat worrying" noise hasgone!
My view on this is that my Unifilter was already compromising the intake to a degree and this restrictor just made things worse. I rang Safari and they tried to fob me off back to the dealer for comment (for this read "clear off you fool - our dealers know everything"). I persisted and eventually got onto a "David" who gave the impression that he had better things to do than talk to me! His short response was that the restrictor is needed for sound dampening and that we would not have it in the kit if it was not required !
Oh well....... after having the installer lose a couple of clips that can't be bought, and to have the snorkel's maker give me the impression that he regards me as a nuisance, I'll just store that knowledge away and advise my contacts accordingly.