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1.9 TDi Boost Gauge - Map Sensor?

Discussion in 'A4/S4 forum(B5 Chassis)' started by EdgeyA4, Jan 11, 2011.

  1. EdgeyA4
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    EdgeyA4 Member

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    [Jan 11, 2011]
    Hi there All, im New to the Forum and to German Tanks lol bare with me,

    Iv been searching around the web and on here and cant find a straight forward answer on how to install a boost gauge on a 110 Tdi, I only wont one to Monitor my Boost, as ever since the turbo went on my 306 i have always been weary and Paranoid lol i had a 306 D turbo before and there was a thin Boost pipe leading from the fuel pump to the I/C (Intercooler) Boost Pipe which i tee'd into, but i cannot find one on my Engine, im guessing i can use the I/C Pipe, but obv cant use a T peice as they are tiny,

    Can i use a Bleed nipple or are there some adapter i can use to take off the IC pipe?

    or Is it possible to T into the pipe that leads to the MAP sensor in the ECU? and can i T into it before the ECU to save taking it apart?

    Thanks in Advance

    Chris
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  3. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Jan 11, 2011]
    There should be a vac line between the boost capsule on the fuel pump and the boost pipework, just like your 306.

    You can use the line to the ECU if you wish though.
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  4. EdgeyA4
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    EdgeyA4 Member

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    [Jan 11, 2011]
    Great, Thanks for the quick responce,

    i dont need to break into the ecu to do it do i? i can follow it along abit and T into it further down?

    Thanks
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  5. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Jan 11, 2011]
    yep you can t into it anywhere you like.

    I'd open the ECU box cover though and T inside there, as it gives you easy access to the cabin too.
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  6. EdgeyA4
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    EdgeyA4 Member

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    [Jan 15, 2011]
    Hi there Again,

    I went to do this today but got stuck before i started lol,

    When i open up the Black Case with the ECU inside i cant see the MAP sensor or the Boost pipe? i can see the Big Loom that runs up the back of the Bulk head but i cant find where the boost pipe starts where it joins the I/C pipe?

    Here are the pips i can see:

    [​IMG]

    [​IMG]

    Is it anywhere near there? has anyone got a pic?

    Thanks in advance

    Chris
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  7. EdgeyA4
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    EdgeyA4 Member

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  8. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Jan 16, 2011]
    I've never worked on a diseasel A4, but from what i can tell the MAP sensor is inside the ECU, so surely there must be a boost line running into that black box and into the ECU itself?
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  9. EdgeyA4
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    EdgeyA4 Member

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    [Jan 17, 2011]
    I belive there should be also lol but i opened the Black case up and i couldnt see a single Boost pipe there were multiple what looked to be covered looms going into the black box, but where covered in a black fabric, i didnt want to go cutting into it incase i cut a wire, so i would ideally like to know where exactly it is or where it comes off the I/C pipework so im possitvie of where im cutting lol

    Thanks for the help
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  10. tdia4
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    tdia4 TDIPOWARRR

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    [Jan 17, 2011]
    I looked for mine before and couldnt find the thing.
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