i got the turbo xs mbc the hp one.. ive been messing w/ it and got it to spike to 20psi but i cant get it to stay there.. it goes to 20 and then drops to 15 by redline
i know its got the adjustment on the side for bleed.. should i turn that all the way in on all the way out so the boost doesnt drop?

 

Both the big knob on the side and the small knob on the top are made to adjust the boost. The big knob is the "coarse" adjustment... you wanna make sure the top knob is screwed all the way in and adjust the big knob until you get to an area slightly under the amount of boost you wanna run... then turn the top knob counter-clockwise a few turns until you your desired boost level is reached.

I have the same exact MBC and I spike 29psi~30psi and it settles down slowly to 23psi~24psi @ redline... holds 26psi 'til right before 7krpm though.

 

isn't 30 boost way too much for a Evo ???