Boost Solenoid Help.....

Discussion in 'Technical' started by Black Z, Jul 24, 2006.

  1. Black Z

    Black Z New Member

    Hi yall..

    I am renewing a bunch of hoses etc. and have come across the need to ask another question... I have a HKS boost controller but after removing my hard pipes I have found what I believe are the original boost solenoids (correct me if I am wrong).

    My question is.. do I still need these connected when I have a boost controller? They still appear to be completely connected up but on a "Y" adapter for use with the boost controller (ie... boost controller and boost solenoid(??) connect the the "Y" adapter and then a single piece of hose continues to the wastegate..

    They are both connected on each side. Please see the images below to see exactly what I am referencing.

    BTW.. I would like to off them if I can as part of my vaccum hose cleanup.

    [​IMG]

    [​IMG]

    [​IMG]

    Thanks to all, yet again.... :zlove:
     
  2. beaver

    beaver southern zeds

    Yes they are

    boost cut solenoids, i got rid off mine,you can do the same, the solenoids also drop stock boost if detonation occurs from 9psi to 7psi, when they are removed the boost will be lower again, as the last restriction is now removed, to compensate for this, turn the wick up on your ebc untill the psi you want is displayed.
     
  3. Black Z

    Black Z New Member

    Thanks Beaver.. I don't understand the bit

    about having to turn the EBC up more though.. why would removing the boost cut solenoids affect the overall pressure seen from the EBC (excuse my ignorance).. :eek:

     
  4. 90TTZ

    90TTZ Back From The Dead

    You don't have to turn it up

    The EBC will hold the wastegates shut until the desired boost pressure is achieved. His statement would have been correct if you were using a manual boost control valve.
     
  5. beaver

    beaver southern zeds

    Because the solenoid

    is a restriction, when its closed( not in safe mode) you would be seeing stock 9psi boost, when its open(in safe mode) the boost is 7psi, if you remove it completly, the psi drops further around 5psi,so you would have to change the settings on your ebc. An ebc will show a preasure drop, but i cant automatically compensate for it, you have to do it.

     
  6. Black Z

    Black Z New Member

    Groovy... Thank you muchly
    :)
     
  7. 90TTZ

    90TTZ Back From The Dead

    Well I use an AVCR and I have removed the original boost control solenoids when I recently had my enigine out for turbo upgrade. Have not altered the settings at all and still controls at the same pressure. Electronic boost control valves cycle the controller solenoid to restrict pressure getting to the wastegate so the desired boost setpoint is achieved. Only a restriction in the line will limit boost control from a minimum base setting, ie. if the lowest pressure possible was 7 PSI, the EBC would only be able to control boost beyond 7 PSI but if restrictions were removed and now the minimum boost possible was 5 PSI, the EBC can only control beyond 5 PSI. And because it is electronic, it is smart enough to know how much it has to cycle the solenoid to achieve boost setpoint.
     
  8. beaver

    beaver southern zeds

    Thanks for clearing

    that up 90TTZ, i just assumed black zed was fitting an ebc,
    incorrectly i see after reading his post again.:eek: :( :)




     

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