#12376, "RE: How to connect MBC" In response to In response to 3
I'm not using the boost control solenoid at all anymore. It's been removed completely.
The restrictor I use is a tiny brass piece with a hole in it. It sits inside the Tee actually, probably a .040" hole. Just helps regulate the boost a little, not completely necessary. You could use a welder's tip inline as well.