Whoooops!....
wait, I was wrong....
that's the opposite of what I thought. here's my situation...
I purchased a new GT3255 turbo and after installing it, I haven't been able to adjust the boost below about 20-22 lbs at WOT.
After tinkering with it for a few days and checking all the hoses, etc., I decided I must have received a HD or "high boost" actuator with the new turbo so I contacted the vendor and asked them to send me a standard actuator.
They sent me the 1011-673 06164 38289 actuator. The turbo originally came with the 1011-673 07074 38502 actuator which is what I was unable to adjust below 20 psi.
Now, I would just install the one they sent and test it, but unfortunately, it wasn't modified to fit the GT turbo (it should have been, but it wasn't). So either way, the one they sent won't work, but I need to know which is which.
If the 07074 38502 is the "standard" actuator, then I must have a problem somewhere else and I don't need to bother the vender anymore.