thank you gents I blocked off the map sensor this morning drove it hard to work to see if any boost cut... Seems to have done the trick. I wasn't getting a mil light when it was happening but seems good now I'll test over the coming days and see how it goes.
I wasn't getting any cut in the dyno or for a few weeks after the tune, just came on all of a sudden. The ECU does learn at a fast rate so not sure why or how it happened.
Thanks for everyone's help with this gents [emoji106][emoji4]