DONT READ ANYTHING I WROTE IF YOU DONT HAVE A BOOST GAUGE INSTALLED. the link i have posted shows how to install one.
I dont have a chip and run that MBC with no problems, so dont listen to those guys. If you do want to raise the boost just a little you should install a diode on the map sensor, that way the ecu wont throw you into limp mode. Read this:
it has a lot of goof info. As far as the install goes, the brass fitting goes to the wastegate line, and the other line goes to the other fitting lol, sounds bad but its that simple. just take the lines off the n75 and replace them on the mbc, leaving the n75 plugged in.