Slant 6 Turbo 68Dart Project

the setup determines how it works. there are a couple different configurations for manual boost controllers. its hard to tell by looking at it. some are just a controlled leak. some like the one i have use a check ball to keep all pressure away from the wastgate until it is at the desired pressure. the ones that are just a controlled leak tend to start opening the wategate before it has reached the desired pressure. that makes it seem like it spools slowly because it is bleeding off pressure before it needs to.

did yours come with instructions? i would assume turning it out would make more boost but i could be wrong. you could always blow into it and turn the knob and see what happens. if its easier to blow then that should equate to more boost. you might need to block off the port that goes to the wastegate to see any change.