Robdog77

So by centre diff..do you mean Front Diff that seems to be connected to the transmission?
Or is there another part you are referring to?
Is it possible to leave it in FWD mode for a month or 2?..or is that too much load on the front diff?
Apparently having it in FWD mode helps with fuel consumption also

Duncanm..
I just pulled the fuse,and the vibration and groaning has gone..wtf?
Does that confirm its the rear diff?
FYI..you are a friggin legend

It is an auto..
How many bloody diffs does this car have..lol
I thought it only had a front and rear differential?
Is the centre diff a pain in the ass to replace?
Cheers guys

Appreciate your time guys..
I will get that looked at on Monday and see if we can find the culprit..
If it is the wastegate actuator..I can purchase one of them for a TD04...correct?

Duncanm..
You have no idea how much I appreciate you providing link for my EBC..
You went above and beyond and I thankyou ..
The boost controller seems to be on 8psi for Boost 1 and Boost 2
The Hi Boost is set at 6
No idea what any of that means,but they are the settings..
The red light doesn’t come on in Park..only when car is driving along and just above 2500rpm
Everything was done by a mobile mechanic for previous owner..but I feel this issue is also,affecting the fuel consumption that considering has to be premium unleaded and down here costs around 166.9 a litre is starting to kill me..lol
I get around 390 to 415 every tank..and I definitely don’t drive her hard,live semi rural and no traffic lights all the way to town which is about 30min drive..
I just want it running right..is there a way to cheaply reset the ECU or something similar ?
Thank you so much guys