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Thread: td boost

  1. 16th September 2010, 09:22 PM #1
    jace Guest

    td boost

    hi guys just i question at this stage of the game.....

    i have done a straight though exasut with a rear resenator.. \\

    how to i got about raising the boost preasure?

    is it safe? what are the peramiters? and what boost to they run stock

    ?
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  2. 16th September 2010, 10:14 PM #2
    Blknight.aus's Avatar
    Blknight.aus
    Blknight.aus is offline RoverLord Vendor
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    tdi is about 14-15psi stock.

    i'll throw 20psi as the limit but I wouldnt want to run one there all day.

    fit a pyrometer and boost gauge before you start messing

    the search function is your friend.
    Dave

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  3. 18th September 2010, 05:48 PM #3
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    Iain_B
    Iain_B is offline Master
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    Mine is set up to run 20psi, has been for about a year now. I try to keep it down to around 16-18psi by backing off a bit- only using the full boost for overtaking or getting out of trouble. EGT's run at 690-710, but that's normally only if I hold the pedal hard up against the kickdown spring up a steep hill at 90-100kph fully loaded. It runs around 660 deg under 20psi boost. To be honest, I don't think it really makes that much difference power wise - at least no real "kick in the pants" - whereas the diesel gas I fitted I can feel.
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  4. 18th September 2010, 08:00 PM #4
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    rick130
    rick130 is offline Moderator Gold Subscriber
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    Any more than 18 psi and you're liable to do a head gasket.
    There is a new spec head gasket that will cope better with higher than stock pressure, and some tuners give the head bolts 20* more angle to cope with the greater boost pressure.

    As Dave said, stock is 1-1.1bar/14.5-15.5psi
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