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Judder and Boost Question

adam8747 May 22, 2010

  1. adam8747

    adam8747 Member

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    Ok my car judders when I let the throttle off. It only happens when I have really put my foot down. It feels like the engine is dumping all of the power....Has anyone else had this problem? Have changed the dv could it be a maf problem?

    Also I fitted a boost gauge to my car yesterday. Its boosting at 14psi, has it been mapped?
     
  2. OllieH

    OllieH Member

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    It's hard to tell what you mean by this. Do you mean the car suddenly stops accelerating when you release the pedal, as in like when you hit a puddle of water in the road (quite normal I think, especially if making full boost), or do you mean once you have let the throttle off the car judders, like you're driving across rumble strips??
     
  3. adam8747

    adam8747 Member

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    Sorry this is pretty vague. Yes its a bit like hitting water, just doesnt feel right. As for the boost pressure any ideas?
     
  4. Welly

    Welly VX220 SC Driver :)

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    Ummmmmm, yes it is a bit. For example, how are we supposed to know if:

    when we don't know vital pieces of information such as what engine it is. A3 or S3? They run at different pressures standard and mapped....
     

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