Awesome help guys.
Particular thanks to Jon@work.
and Stu,
'However, if you still have issues, drop lower by 0.1v at a time until its ok.'

Re-set my tps to 0.26 and idle is spot on again.

Thankyou again.

Tabs, how the hell do you get your car to be so efficient?? My car has standard blue injectors, standard etc, etc and yet running a bigger turbo and greys yours manages much more out of the tank than mine.
You don't have some kind of Tardis Tank on yours do you?? lol

Can I get a good tuner to get to that level with a chip and set-up only, or will I have to get an ecu the same as you have? ( I will have greys and my t34-43 and cooler on at set-up time)
If so, does the new unit have the same 35 pin plug as the oem ecu, or will I have to alter it?
Thanks for your time mate. Genuinely appreciated.