boost controller

[mohnissan]

hi guys (sorry about the spill. I am from bahrain)
take it easy dont make angry :kiss:

I by a manual boost controller and I want to set the boost to 12psi in my car (open Exhust, SMIC,sr20det) but I have some problem

1- when I set the boost to 12psi it go to 15psi then retern to 12-10psi it is not stabel, and hard to controlle. so what is the problem you think.

2- about the fuel cut when it came?
bcoz in my car I reach the fuel cut at ~16psi and it is hard cut (the car get down then go agane)

BTW what is the corect conection to the manual controller pic1 or pic2

pic1
http://www.jimwolftechnology.com/images/BOOSTCONTROLMANUALNEWSMALL.jpg

pic2
http://www.zilvia.net/f/attachment.php?attachmentid=7769&stc=1


thanks guys for help

[nrg]

From your picture, it looks like a bleed valve setup.
Picture 2 is the correct way for a MBC.
Hopefully your mbc has a vent valve, which will have less boost spikes.
Is this a stock sr20 t25 turbo? Because those turbo maxes out at 14.5psi. Your injectors are already close to being maxed out.