Pd70 9n3 won’t hold full boost

Connor_9n3

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Hi.

I’m currently having problems with my turbo holding boost. When I put my foot down anytime after 2000rpm it boosts all the way around to 16/17 psi then drops off immediately to 12/13 psi I’m suspecting it’s the actuator but I’d appreciate some more professional opinions on this one.

thanks.