Your car must be sounding fantastico now Asker! Happy with the results?
Waiting for Jim's Blurfin update now....
No need for a Bluefin, I am now running a Carbon Chiptuning ECU Mod

Still assesing it, first impressions are that it feels OEM but with bite, very smooth power delivery, no flat spots.
I will provide more comments to all in a few days when i've had a chance to drive it a bit more and for the ECU to do any adjustments.
Thanks to Nick & The Doc at Carbon Chiptuning for going the extra mile to get my issue sorted.
Jim