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  1. #1
    Junior Member Two Rings JimmiK531's Avatar
    Join Date
    Jun 19 2013
    AZ Member #
    117454
    Location
    Bernardsville, NJ

    Unitronic Intake - squeal noise

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    Just installed the Unitronic Intake on my RS6. Experiencing a high squeal noise upon partial throttle ( say 25-45mph) or when I let off the gas. Does not happen when mashing the pedal to the floor.

    Everything seems to be on correct and tight. With the windows down, it’s really annoying. Almost like a slight feedback from a microphone….

    Im being told it’s the turbos. Not sure I believe it.

    The intake has the updated turbo inlets.

    Car also has the unitronic down pipes.


    Thx!

  2. #2
    Veteran Member Three Rings awdbiturbo's Avatar
    Join Date
    Apr 20 2004
    AZ Member #
    1806
    My Garage
    01.5 S4 /95.5 URS6/72 914/
    Location
    Boston

    My car does this with the Eventuri intake system. I thought it was the o-rings on the pcv tubes, I bought a pair from the dealer as the 0-rings were not sold separately, this did not resolve the issue.
    2001 Audi S4 Stage 3+/996TT with mods/HURACAN LP610-4 VORSTEINER NOVITEC VF ENGINEERING / 22 AUDI RSQ8 NARDO CARBON/22 RS6 NARDO BLACK OPTICS IE EVENTURI CTS

  3. #3
    Junior Member Two Rings JimmiK531's Avatar
    Join Date
    Jun 19 2013
    AZ Member #
    117454
    Location
    Bernardsville, NJ

    Thanks for the reply. This noise is quite annoying. I almost want to remove the intake.

  4. #4
    Veteran Member Three Rings KRS Aaron's Avatar
    Join Date
    Jan 25 2011
    AZ Member #
    69964
    Location
    Evanston, IL

    Quote Originally Posted by JimmiK531 View Post
    Thanks for the reply. This noise is quite annoying. I almost want to remove the intake.
    Can you get a video of it? I'm very curious since I will eventually be putting an intake on my car.
    2024 RS6 Performance - Nogaro Blue
    2012 S4 - Nogaro Blue
    2017 Aston Martin V12 Vantage S - Onyx Black
    1994 BMW 850 CSi - Mauritius Blue
    M2 CS Racing

  5. #5
    Junior Member One Ring
    Join Date
    Aug 10 2021
    AZ Member #
    617431
    Location
    604

    Quote Originally Posted by KRS Aaron View Post
    Can you get a video of it? I'm very curious since I will eventually be putting an intake on my car.
    Did you install it yourself ? It comes with o-rings that may be wrong

    - - - Updated - - -

    Quote Originally Posted by JimmiK531 View Post
    Thanks for the reply. This noise is quite annoying. I almost want to remove the intake.
    Check the o-rings

  6. #6
    Veteran Member Three Rings KRS Aaron's Avatar
    Join Date
    Jan 25 2011
    AZ Member #
    69964
    Location
    Evanston, IL

    Quote Originally Posted by Rg604 View Post
    Did you install it yourself ? It comes with o-rings that may be wrong

    - - - Updated - - -



    Check the o-rings
    I don't have one yet but I am curious. I put the 034 drop in filter in, and there is definitely a noise I just assumed were the turbos.
    2024 RS6 Performance - Nogaro Blue
    2012 S4 - Nogaro Blue
    2017 Aston Martin V12 Vantage S - Onyx Black
    1994 BMW 850 CSi - Mauritius Blue
    M2 CS Racing

  7. #7
    Veteran Member Three Rings awdbiturbo's Avatar
    Join Date
    Apr 20 2004
    AZ Member #
    1806
    My Garage
    01.5 S4 /95.5 URS6/72 914/
    Location
    Boston

    I didn't want to edit my post, But would like to add to it. When I bought the PCV valve tubes ( just for the O-rings) I also bought new inlet pipe to turbo gaskets, "just in case. All of the gaskets came from the Audi dealer.
    2001 Audi S4 Stage 3+/996TT with mods/HURACAN LP610-4 VORSTEINER NOVITEC VF ENGINEERING / 22 AUDI RSQ8 NARDO CARBON/22 RS6 NARDO BLACK OPTICS IE EVENTURI CTS

  8. #8
    Junior Member Two Rings
    Join Date
    Sep 25 2022
    AZ Member #
    816360
    Location
    Sydney

    I had similar with the Eventuri. I asked them (Eventuri) about it and they said that with the clearer air way you hear the turbo “start to spool up”. Which after checking, listening etc makes sense for what I’m hearing. It’s a slight squeal that is consistent with a lightly spinning turbo with no boost, low speed, light throttle etc. the noise disappears (or is overwhelmed by all the other noises) once you plant it …

    Hope that helps. It “annoyed/disappointed” at Day 1 as the dealer installed the intake for me. I’ve now had mine for nearly 4 months and I’m totally “not noticing” or if I do happen to notice then I’m just thinking that I’ll need to fully wake up the turbos some more …

  9. #9
    Junior Member Two Rings JimmiK531's Avatar
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    Jun 19 2013
    AZ Member #
    117454
    Location
    Bernardsville, NJ

    Quote Originally Posted by Astonished View Post
    I had similar with the Eventuri. I asked them (Eventuri) about it and they said that with the clearer air way you hear the turbo “start to spool up”. Which after checking, listening etc makes sense for what I’m hearing. It’s a slight squeal that is consistent with a lightly spinning turbo with no boost, low speed, light throttle etc. the noise disappears (or is overwhelmed by all the other noises) once you plant it …

    Hope that helps. It “annoyed/disappointed” at Day 1 as the dealer installed the intake for me. I’ve now had mine for nearly 4 months and I’m totally “not noticing” or if I do happen to notice then I’m just thinking that I’ll need to fully wake up the turbos some more …

    Thanks for getting back to me on this! This is the exact same response I got from the shop who installed the intake. Guess I’ll have to deal but it’s quite annoying tbh. I’ll make the exhaust louder 😂

  10. #10
    Junior Member Two Rings JimmiK531's Avatar
    Join Date
    Jun 19 2013
    AZ Member #
    117454
    Location
    Bernardsville, NJ

    Quote Originally Posted by KRS Aaron View Post
    Can you get a video of it? I'm very curious since I will eventually be putting an intake on my car.
    Dm me and I can send a video for ya. Not sure how to post videos 🤦🏻*♂️

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