I have seen posts about fitting a 6S ecu and about the wires need changing.
can anybody tell me what and where these wires are for a 3 plug 98 uk. pin numbers would be great and even pics if possable. thank you in advance

 

Do you have the full engine setup from an sti v3? If not then its pointless fitting the 6S ecu as it will kill your engine

 

6S ecu was fitted to V3 jap import STi with a vf28 (I think) and different cams and is not mappable without an esl daughter board and set up for high octane fuel, as such it would need mapping to run safely on a UK with the same set up. let alone a non identical uk car.

Careful or you might get a nasty surprise.

 

VF23

 

hence the I think you beat me to it, must type faster.

 

VF28 is what I will be removing from mine next month if all goes to plan

 

Cam and crank signal wires need swapping, and fuel pump relay trigger moving to another pin location

As above, Turbo, MAF sensor, cams and valvetrain (and rev limit) are different on the STi to the UK model, so a straight swap of the ecu into a UK turbo wont run correctly and likely end in disaster!

 

As said above, you would have to swap a massive amount of kit to make it compatible with an 6S sti3 ECU. You will get more power for less money but having your 8S remapped without changing anything.