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Judder and Boost Question

Discussion in 'A3/S3 Forum (8L Chassis)' started by adam8747, May 22, 2010.

  1. adam8747
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    adam8747 Member

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    [May 22, 2010]
    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?
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  3. OllieH
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    OllieH Member

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    [May 22, 2010]
    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??
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  4. adam8747
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    adam8747 Member

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    [May 23, 2010]
    Sorry this is pretty vague. Yes its a bit like hitting water, just doesnt feel right. As for the boost pressure any ideas?
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  5. Welly
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    Welly VX220 SC Driver :)

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    [May 24, 2010]
    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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