Cant control boost

[Flybiyou]

Whats up everone have a problem that maybe one of you guys can help me with. I had a manual boost controler on my car befor and tried to lower boost with it and it never did I could only raise it. I bought a greddy profec b 2 and tried the same thing to lower boost and hold it. Its not working no matter what I always boost 21 22 pounds I can turn the profec to 1 and it goes right to 21 pounds I can control the gain but not boost. I dont know what to look for for trouble shooting and the only thing I can think of is the wastegat is bad. Any ideas on this.

Thanks
AJ Mods in profile

 

[oldman]

This is all very confusing, you need to put more effort into this. Tell us separately on what happens to boost with the MBC then the EBC. Here is some other relevant information.

1. What type/brand is the MBC?
2. How is it hooked up?
3. What happens if you bypass everything and connect the pressure source directly to the actuator?