DNA MOTORING Manual Boost Controller, Universal Adjustable Turbo Engine Boost Controller, Aluminum Alloy-Silver, BC-T5-SL

I've tested this mbc and it doesn't open to wastegate pressure and I'm glad that I did because it would have immediately gone to the moon. I had to shim the nipple that holds the ball to make it open to stock wastegate pressure. I think mechanically is not symmetrical to a true Hallman.