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Problems with Boost - Any ideas?

Discussion in 'Tuning' started by Gavin Cooper, Dec 29, 2007.

  1. Gavin Cooper
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    Gavin Cooper More power captain

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    [Dec 29, 2007]
    Hi - just wondered if anyone else had experienced this before...

    I've had a BT upgrade and recently experienced problems with boost - put my foot down and it's completely flat. Turn off the engine, turn it back on again...and hey presto! It SEEMS to come back...very strange.

    VAG is reporting error code:
    17705 - Pressure Drop between Turbo and Throttle Valve (check D.V.!)

    Replaced a suspected split in a pipe and changed the DV spring to blue.

    I have had a botch a fix recently - a pipe going to the recirculating valve had split - so I've just managed to fit the valve straight on to the pipe where it had split and secured it with a jubilee clip - this couldn't cause a complete drop in boost.

    Any help would be greatly received.

    Thanks,
    Gavin
    [​IMG]
    #1
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  3. Backdraft Motorsport
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    Backdraft Motorsport 1.8T & 2.0TFSi Specialists Site Sponsor

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    [Dec 30, 2007]
    Hi Gavin,
    Sounds like a boost leak, split hose etc.
    Need to do a pressure leak test. More than happy to do it for you if you want to come up. We need to look at your oil leak some time anyway.
    If you cant get up have a good look around the small hoses that come off of your intake manifold. Sometimes you really have to twist them around to see where they have split.
    Best wishes for the new year,
    Mark
    Backdraft Motorsport.
    #2
  4. Gavin Cooper
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    Gavin Cooper More power captain

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    [Dec 31, 2007]
    Hi Mark,

    Thanks for the info. Would be worthwhile having a look, unfortuantely I've had no time off over Christmas and won't have until later in Jan. Will get in touch when I've got some holiday and we can book it in then.

    Have a good New Year.

    Thanks,
    Gavin
    #3

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