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  1. #1
    Established Member Two Rings
    Join Date
    Mar 10 2008
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    26255
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    2005 A4 1.8T Ultrasport 6MT
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    Jersey

    N75 Valve & Manual Boost Contoller..

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    Probably a dumb question but whats the difference between the two??

  2. #2
    Veteran Member Four Rings old guy's Avatar
    Join Date
    Dec 28 2006
    AZ Member #
    14483
    My Garage
    '13 A5, '24 Tiguan SEL R-Line
    Location
    Western Maryland

    Re: N75 Valve & Manual Boost Contoller..

    A manual boost controller simply limits the maximum boost pressure available. The N75 allows the ECU to modulate the boost as it sees fit.
    '03 A4 5-MT Motoza tuned Frankenturbo F21L With full supporting mods. Sold (and missed dearly).
    '13 A5 6-MT Needs more Fun Stuff: Neuspeed PM / 3.0 TDI Intercooler / H&R OE Sport Springs / Bilstein B8 Shocks / TyrolSport Brake Stiffeners / ECS Short Shifter / S5 Side Skirts / RS Grille

  3. #3
    Established Member Two Rings
    Join Date
    Mar 10 2008
    AZ Member #
    26255
    My Garage
    2005 A4 1.8T Ultrasport 6MT
    Location
    Jersey

    Re: N75 Valve & Manual Boost Contoller..

    Ooh ok.. so essentially the n75 valve is an "automatic" boost controller in a way

  4. #4
    Established Member Two Rings michpan's Avatar
    Join Date
    Mar 15 2007
    AZ Member #
    16449
    Location
    Athens, Greece

    Re: N75 Valve & Manual Boost Contoller..

    The N75 is indeed a boost controller. A common use for an MBC is limiting the maximum boost according to your everyday wishes. You can choose different boost levels when going to work, different on a track, different when racing someone..


    Michael
    - Audi A4 1.8T B7 FWD+GT2x+carbonio
    + milltek exhaust+neuspeed xtreme tip
    + APR fmic+hofele bumper+ bilstein/h&r
    + votex rear spoiler/diffuser+DTM skirts
    + RS4 18' wheels+RS4 pedals+s4 mirrors

  5. #5
    Account Terminated Four Rings mike-2ptzero's Avatar
    Join Date
    Jul 07 2004
    AZ Member #
    2716
    My Garage
    630AWHP A4, Nissan Titan
    Location
    socal

    Re: N75 Valve & Manual Boost Contoller..

    Quote Originally Posted by 02A4Turbo. View Post
    Ooh ok.. so essentially the n75 valve is an "automatic" boost controller in a way
    A N75 valve is a OEM version of a EBC using the ecu as the controller. Problem is that the ECu likes to open the N75 early to soften the onset of boost.

  6. #6
    Established Member Two Rings
    Join Date
    Mar 10 2008
    AZ Member #
    26255
    My Garage
    2005 A4 1.8T Ultrasport 6MT
    Location
    Jersey

    Re: N75 Valve & Manual Boost Contoller..

    Hmm all of the responses definitely helped.. you guys know what youre talking about lol

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