Its mapped now, results are superb, it goes like a rocket, estimated 250-260bhp, rolling rd to confirm. Running just over a bar of boost, its awesome, plant it in 5th at 70mph and it still pulls you back in your seat, on a private rd of course. We tried 18psi of boost but the clutch was reluctant to hold, so I backed it off, more power would need a clutch that costs near £400, it would be heavy too, so it will have to do as is.
Bad point of the day is it feels like the offside outer cv joint is seizing/dying, stiff to turn to the right and knock/clunk when taking up drive.
So I've ordered a couple of replacements, might as well change the pair.