well i called tuner and the car is getting boost creep. He did infact put on a aftermarket actuator. He is letting mtq know and see what they suggest. My tuner thinks external wastegate is the way to go but i know people here have been successful with holding boost.
in my mind it could be either of these three issues
How large is the waste gate flapper, apparently they made it larger to suit
Split dump used, seems to be a common problem with these turbos
actuator, i assume he choose the required one but who knows
I guess they just go through the scenarios trial and error now. How dissapointing
Just got some more info as i was busy when he called me last and i didnt get all infor
on low boost setting = 10 pounds by the time its hits 7000rpm it goes up to 17 pounds
on high boost setting = 17pounds it holds 17 but fluctuates a bit.
it made 350rwhp at 17psi 18 knock on WA dyno