It works, finished the exhaust today and went for a squirt. Its much quieter than the old 3 inch Legalis but the boost ramps slower now meaning the valve is opening too slowly. (even though the turbo spools earlier) I need a very soft spring in the actuator, a 2-3 psi actuator would be perfect but I cant find any. I might buy one of these and modify the spring tension.
http://www.ebay.com.au/itm/Kinugawa-Adjustable-Turbo-Wastegate-Actuator-TOYOTA-CT26-1HD-12HT-7MGTE-3SGTE-/270918414481?_trksid=p4340.m263&_trkparms=algo%3DSI%26its%3DI%26itu%3DUCI%26otn%3D18%26pmod%3D270912634695%26ps%3D63%26clkid%3D6968393460851378814#ht_1864wt_1135
Pretty happy with how it turned out, I got the larger pipe tucked up nicely. Hopefully there are some top end gains to be had too once its sorted.