Low boost, reset ecu = high boost again
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This is a discussion on Low boost, reset ecu = high boost again within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Hi I have problem with y subaru WRX 02 bugeye. I lose boost presure and i have 0,5 bar. before ...

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    Arrow Low boost, reset ecu = high boost again

    Hi I have problem with y subaru WRX 02 bugeye.
    I lose boost presure and i have 0,5 bar. before i have 1.3 bar.
    Hose is checked, all sensor under the hood also, benzine pomp presure 3.0 bar (walbro 255l)
    But after put cable from ACU together for 5min i have full bost 1,3 bar but my full boost i lose after 3-4 min.
    WG is work good. I put my laptop to my car and ECU dont show any errors. nothing.
    best regards

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    Moderator Donkey's Avatar
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    The ECU is disabling boost due to severe knock probably. I would not drive the car until you resolve the issue. What fuel are you using and what are the mods? Is there not a check engine light on?
    Resident Adviser @ WTF Tuning, LLC
    2002 FORESTER S
    1998 FORESTER S




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    On begining I also thing about knock sensor, but i dont have check engine light on. if i have knock trouble, my computer show something but nothing. I drive all time on 98 octane.
    I have exhaust 3" HKS DRAGSTER without cat. Turbo TD04 , 1,3 bar blue injections 440cc and remap.

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    and also i have before CEL and error P0171, after this i check benzine presure and i have to low 2.0 bar. I buy new one and now i get 3,0 -3,5 bar

  6. #5
    Moderator Donkey's Avatar
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    What engine management for remap?
    Resident Adviser @ WTF Tuning, LLC
    2002 FORESTER S
    1998 FORESTER S




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    i dont know that because i buy this car with remap. Hi sed its arround 280-300hp

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    sorry my car is without remap

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