Tha ks for the input guys.
A quick update:
So I flashed v9 map and done a throttle reset.
The issue is still present, however it doesn't seem as bad. I noticed a similar surging when in 1st gear when I was rolling out the car park, but not sure if that's just me moving the pedal a little or being paranoid.
Maybe it's learning still and will fade out, in my haste to get home for dinner I forgot to do a log.
However I've put a reminder on my phone for tomorrow
On a side note, the boost kicks in significantly harder on in the lower rpm's than the v8. Wernt far of parking in the boot of the car I was overtaking
Thanks again to all that have commented