Forced Induction Custom FI Setup Questions

open waste gate - still creeps

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Old Mar 27, 2007 | 09:11 PM
  #11  
Atticus's Avatar
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Default Re: open waste gate - still creeps

yes the actuator was off
and yes i was building over 12 psi (spooled at like 5500)

i was thinking about tuning with boost creep and using it to my advantage (more hp)
but i dont know if this would be safe considering boost creep is unpredictable

has any one ever done this and had good results
Old Mar 27, 2007 | 09:48 PM
  #13  
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Default Re: open waste gate - still creeps

no i unhooked the flapper from the rod from the actuator
i dont know why but it builds boost
it will bog like ---- then around 5500 - 6000 rpm i will hit boost
Old Mar 28, 2007 | 01:12 AM
  #15  
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Default Re: open waste gate - still creeps

uh, well think about it..... you have a hole that you cant stick two fingers in and the turbo exhaust houseing, of course its going to naturally follow the path of less resistance. so of course, turbos with a small internal w/g will spike.
Old Mar 28, 2007 | 01:22 AM
  #16  
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Default Re: open waste gate - still creeps

Originally Posted by rexsk8er
uh, well think about it..... you have a hole that you cant stick two fingers in and the turbo exhaust houseing, of course its going to naturally follow the path of less resistance. so of course, turbos with a small internal w/g will spike.
bingo
ok back to the question about tuneing boost creep what do you guys thing good idea?
Old Mar 28, 2007 | 02:35 PM
  #17  
idiot-stick's Avatar
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Default Re: open waste gate - still creeps

Originally Posted by Atticus
bingo
ok back to the question about tuneing boost creep what do you guys thing good idea?
is that a serious question?
Old Mar 28, 2007 | 08:38 PM
  #18  
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Default Re: open waste gate - still creeps

ya if i got a 2 bar map sensor and tuned it would it be a good idea
it only creeps to like 13-14 psi
Old Mar 28, 2007 | 10:58 PM
  #19  
HiProfile's Avatar
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Default Re: open waste gate - still creeps

I recall some DSM genius decided to really max out his 14b when he was about to swap to his new motor/turbo. WIth the gate shut, it spiked to either 22 or 27 psi, then dropped down past 17psi at redline IIRC.

The exact numbers don't matter, the fact is the 14b won't spike all that much, so trying for 12psi on a 22psi MAP sensor and allowing for even 10psi of creep really won't be a big deal. As long as its tuned for it, thats what really makes or breaks that smart idear you have there :1
Old Mar 31, 2007 | 02:08 PM
  #20  
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Default Re: open waste gate - still creeps

16g/14b tends to creep. Check if ur wastegate flapper is moving all the time or not! oes it get stucks anyhow!. cant boost at all. chocked exhust :O



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