Thanks everyone for their input. Going by advice, I think the plan will be to replace all the gaskets on the turbo side, hopefully that's all the problem is. From there i'll stick with the orig plan of nistune and dial in some extra boost then go NPC organic clutch when that fails. I think i'll go for a high flow job ultimately, and then injectors and fuel pump and re-tune (mortgage allowing )
Looking at the dyno thread I think the first step will bring teh lulz, and then i'll move on from there....any chance I will hit 200 with 10/11psi, nistune, fmic and exhaust? others seemed to go close.