AH FabricationsJMB Retrofits
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  1. #1
    Reverse Gear

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    Correct boost figures

    1999 S3 APY,Please can someone tell me the correct boost peak or hold psi,I have stage 1 map not sure company,I have been running j valve for couple of years now cant stand boost spikes going to fit new standard valve so i cannot remember what boost was before fitting j valve.

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  3. #2
    Lemon S3's Avatar
    Alex

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    Standard is 15psi, stage 1 is about 19/20psi.
    1999 APY S3 Imola Yellow

    PS3: Broady_11

  4. #3
    vetch's Avatar
    S3

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    Quote Originally Posted by Darrenspain View Post
    1999 S3 APY,Please can someone tell me the correct boost peak or hold psi,I have stage 1 map not sure company,I have been running j valve for couple of years now cant stand boost spikes going to fit new standard valve so i cannot remember what boost was before fitting j valve.
    This might be a daft question, but what effect are the boost spikes having on the driveability of the car? I was considering a J valve to add a bit more torque on the cheap!
    Audi S3

  5. #4
    Reverse Gear

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    I would stick with standard valve the j does give bit more boost but not very smooth sometimes jerks feels like misfire,thinks it's hitting limp mode.

 

 

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