Let's get this slant turbo project started. 71 Dart

Are 12s necessary? Or rather is it better? 13 is when there's no boost, pulling around 8 inches of vacuum and cruising the highway.

I need to dial in my boost referenced power valve. The boost pressure is not overcoming itself. I need to find a way to get more pressure to the power valve. Maybe a line direct from the pocket over to the compressor would be better - or like chris has done and get it over to the exhaust.