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mbc + diode and unable to boost beyond 16psi?

Old Feb 20, 2009 | 10:05 AM
  #1  
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Default mbc + diode and unable to boost beyond 16psi?

so i got some of my other issues resolved, but im still left with 1 question.

what are some things that would cause me to not boost beyond 16psi? i have a turboxs mbc and a zenner diode to keep away the CEL. However, I cant seem to boost beyond 16 psi no matter what i do. I have a k03s and a yellow spring in my forge 007p.
 
Old Feb 20, 2009 | 10:45 AM
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if you have the basic, thats about as high as it will go. Its 12psi over wastegate which will be 17psi. If you want psi, you have to crank the wastegate some
 
Old Feb 20, 2009 | 11:05 AM
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oh ok. so if you have the MBC opened up too far and that peaks at 16psi, then what should happen? what symptoms?

I'm getting some strange boost issues, and i always thought the boost would just keep going up, and that something was wrong and i had a leak somewhere that was venting everything beyond 16psi...

im actually glad to know it peaks ~16psi until i fiddle with the wastegate. i thought i might have had a hose wrong on the N75 or something although I bypassed it with my mbc, though I still have 1 hose plugged in to it and have the electrical connector plugged in on it (is that correct?). my poor car has been nothing but a pain since i bought it and for some reason, i still don't have buyer's remorse.
 

Last edited by chosos; Feb 20, 2009 at 11:10 AM.
Old Feb 20, 2009 | 11:49 AM
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YOu cant open a bleed to far, just as far as it will let you. The n75 is done correctly. Your dv spring is probably way to stiff. You may want to go back to the green spring and at most a shim
 
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