Thanks for the advice. MBC=manual boost controller? If so, that's what I have, it's the basic Dawes controller that I've seen recommended here.

I get about 10psi. Today I tried to get up around the 12-14psi range but couldn't. Here's what I tried:

1. Detached wastegate hose. Boost maxxed at 11psi.
2. Detached wastegate hose and boost sensor override (the one on the firewall). Boost still maxxed at 11psi.

Any ideas what this means? I didn't notice any different feel in the car's performance between the two setups...to me this seems that my wastegate is still not seating correctly. Is this correct? My ALDA lines are clean and the ALDA is 1.5 turns CCW from stock, about a half turn from the end of its travel in the CCW direction.

Should I go back into the wastegate and turn down the adjustment nut, tighten the spring?

Is it worth going after the additional pressure?

Thanks-
Rob

__________________
Rob
1979 300SD W116