MBC's
 

Hello guys, has anyone tried to use MBC with relief valves to control boost, like the HPBC of turboxs, or the DIY manual boost controllers like the one described in the following article:

http://www.autospeed.com/A_0670/article.html

seems like with the systems described above there isn't anymore full boost on part throttle (less than 1/3) .....

Carlos H.