I will run below 10 psi. Like an original 12HT i guess..
I just talked to the guy, and he also said that it would be no problem with low boost..And that he sold it to me because i said i would run low boost..wich i did..

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The wastegate-spring feels pretty soft so he said it's probably set somwhere around 8 or 9 psi.
I'm keeping it.