Tested the turbo today and makes 0,4 bar easily then struggles up to 0,6 bar. I shudder to think what it would do with the A.R.V. hooked up!

Cruising it is 0,2 bar so at least there is something, but think if it was higher get better mileage and response.
Turbo had cleaner run though in 2007 so doubt that be a reason. Then thought to check and see if the A.L.D.A. holds pressure and does not. Per this article it should:
ALDA Repair . Could this be the reason for the struggle to produce 0,6 bar of pressure? Not finding any information on the Peach or anywhere else.
I was thinking the best plan would be fix the A.L.D.A. then re test and adjust the turbo as needed. Then once the A.L.D.A. is functioning properly and the turbo is maxing out at least 0,8 bar, then check the A.L.D.A. adjustment and correct if needed. Is this right?
Thank you in advance!