I need help guys... my Hallman pro mbc is not working fine. It increases boost even i turn it all the way clockwise or counter clock wise its stil the same! Im boosting more than my tuned before(more than 22psi). Good thing i preset my boost gauge(peak boost).

What should i do?

 

Put the line back on your wastegate that came off?

 

huh? it's on. I was thinking of the spring or something?

 

i would try cleaning out the mbc, re lubing the ball, make sure the spring is seated in the mbc properly, and make sure the small bleed valve on the side of the mbc isnt clogged.

 

See if air will pass thru the mbc at all. If not, it is your problem. If it does, then your wg line is leaking & the wg is not opening. Or your problem is elsewhere, such as the wg.

 

I just did the boost leak test last week and its not clogged. I will try to check the WG tomorrow.