Which one

[SH4RKY]

i have a really annoying one behind the clocks/speedo, above 3.5k rpm it sounds like frying bacon, got to have a look, but it doesn't always do it which is annoying, strange.

Thats an interesting comment... I think I have had a similar noise, but very rarely and only under full acceleration. The one time it happened as i accelerated through several gears.

As you say, behind the dash and a sort of sizzly noise... I thought it sounded like aerated liquid being sucked at high pressure through a pipe or something.

I thought Fuel line as it seemed to happen under heavy acceleration?? but surely that doesnt come into the cabin... odd.