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Carbonio Intake Loud Whistle

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  • #1

    Carbonio Intake Loud Whistle

    I have recently been stage 1 tuned (very happy) and now I've added the Carbonio intake.

    It sounds great but I get an annoying whistle at WOT. I actually think I heard it before but it was quieter (with the stock intake). Now it's a lot more noticeable.

    I didn't take a video but managed to find a GTI on youtube with the exact same sound.

    http://www.youtube.com/watch?v=Ssi2XEfP8vU

    Any thoughts? I've double and triple checked all the hose clamps. I'm thinking it's the diverter valve issue that I've seen pop up elsewhere, or is this just a characteristic that is emphasised by the intake?

    Thanks in advance.
    MY17 206 R-Line Passat Sedan, Pure White, Sunroof | Spectune STG1 | VWR 600 Intake, TMD, Inlet Elbow | Res Delete

    MY 13 Tiguan 155TSI | Pepper Grey | DSG | Leather | RVC | RNS510 | ACC | 18" New York Wheels -SOLD
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  • #2
    I had the same experience, sounds like a continuous computer beeeeeeeeeeeeeeeeeeeeep rather than a normal engine sound
    Because of this I was called the "Screaming Skoda", the "Whistling Skoda" and the "Scud Missile" at a track day
    Here you can clearly hear the beeeeeep right from the hairpin to the braking zone (where the diverter kicks in)
    Screaming Skoda!! - YouTube

    It's either the intercooler or the pipes to the intercooler
    When I put the bigger APR intercooler into the car the beeeep has 90% disappeared
    2012.1 Skoda Octavia VRS DSG Wagon - Carbonio cold air intake and pipe - HPA Motorsports BBK 355mm rotors 6 pot calipers
    APR Stage II ECU - APR 3" exhaust down pipe & high flow catalyst
    APR/HP Roll bars - Eibach springs and Bilstien shocks
    Supaloy lower control arms - Enkei 18*8 Wheels

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    • #3
      I've just spoken with a friend and he thinks it might be a Diverter Valve problem. Apparently they tear easily and make this sound.

      I will still check the rest of the plumbing on the weekend.

      Seems to still hold boost ok, the noise is more of an annoyance than anything at this stage.
      MY17 206 R-Line Passat Sedan, Pure White, Sunroof | Spectune STG1 | VWR 600 Intake, TMD, Inlet Elbow | Res Delete

      MY 13 Tiguan 155TSI | Pepper Grey | DSG | Leather | RVC | RNS510 | ACC | 18" New York Wheels -SOLD

      Comment

      • #4
        Replaced the Diverter Valve with a Rev "D" valve and no more whistle/whine.

        Interesting to see the part number of my DV was 06H 145 710 C which I thought was the older revision. My cars final build date was 11/2012.

        I was going to get the dealer to sort but I could find a DV very quickly and figured that it was more convenient to change over myself to something I know is going to hold up better.

        *Edit.

        After a bit of reading the 06H's are piston type rev "C"'s so they are newer. Interesting that mine played up. I wasn't noticeably loosing boost it was just the whine. Anyway, the noise has gone now so it must have fixed something.
        Last edited by Wynnston; 10-11-2013, 01:50 PM.
        MY17 206 R-Line Passat Sedan, Pure White, Sunroof | Spectune STG1 | VWR 600 Intake, TMD, Inlet Elbow | Res Delete

        MY 13 Tiguan 155TSI | Pepper Grey | DSG | Leather | RVC | RNS510 | ACC | 18" New York Wheels -SOLD

        Comment

        • #5
          Hi, haven't had whistling noise (have Carbonio as well), and I can't imagine it would be DV as the newer piston type are much better than older diaphragm type. I would be very carefully checking ALL hose connections to make sure there is no chance there is any way air could be leaking through. I probably went overkill, but have two constant torque clamps ( ones with spring and nyloc nut so they can't vibrate loose) on my hose connection from CAI to OE pipe!
          On the topic of noise though, since having tune done I have a weird "chuntering" noise at low to medium revs/throttle - sometimes combined with slight hesitation. It is very mechanical noise which suggests it is coming from exhaust side of turbo?!
          Has anyone else experienced this? The tuner believes it may be related to CAI, but I would have thought their tune would have made allowances for change in MAF readings...
          Very puzzling

          Sent from my PadFone 2 using Tapatalk 2
          2011 147TSi 7spd DSG Reflex Silver, 18" New York Alloys, Leather with MDI, ECB Nudge Bar, Viezu Tune (Work in Progress), Eibach ProKit Springs, SuperPro Poly ALK & Rear Trailing Arm Bushes, H&R 26mm Rear ASB and Whiteline HD Adjustable End-Links, VAR Design 3" Downpipe, Sprint Booster, Auto-Polar FIS+ Advanced Module, GTI Sports Pedals, Flappy Paddle Strg Wheel, LED fogs as DRL, chrome blingy bits

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          • #6
            I solved my whistle/whine with that other Diverter valve but I can still hear it whistle/whine on the very odd occasion and nothing like it was before, probably just my paranoia. I went to the plex the other night and ran a 14.054 while loaded up with a large suitcase, my whole sound system (amps, swoofer), 3/4 tank and a few other bits so I'm guessing it's not affecting the performance.

            *Edit, read your post properly.

            What do you mean chuntering? Is it like a turbo intake type flutter or a rattle?
            Last edited by Wynnston; 23-11-2013, 12:31 AM.
            MY17 206 R-Line Passat Sedan, Pure White, Sunroof | Spectune STG1 | VWR 600 Intake, TMD, Inlet Elbow | Res Delete

            MY 13 Tiguan 155TSI | Pepper Grey | DSG | Leather | RVC | RNS510 | ACC | 18" New York Wheels -SOLD

            Comment

            • #7
              Yes, just reread it - sorry, was speed reading while waiting to board flight
              Noise is more a flutter, and you can hear a "slurp & slam" like a flap that's not quite closed suddenly sealing?!
              2011 147TSi 7spd DSG Reflex Silver, 18" New York Alloys, Leather with MDI, ECB Nudge Bar, Viezu Tune (Work in Progress), Eibach ProKit Springs, SuperPro Poly ALK & Rear Trailing Arm Bushes, H&R 26mm Rear ASB and Whiteline HD Adjustable End-Links, VAR Design 3" Downpipe, Sprint Booster, Auto-Polar FIS+ Advanced Module, GTI Sports Pedals, Flappy Paddle Strg Wheel, LED fogs as DRL, chrome blingy bits

              Comment

              • #8
                Originally posted by Tiggy1 View Post
                Yes, just reread it - sorry, was speed reading while waiting to board flight
                Noise is more a flutter, and you can hear a "slurp & slam" like a flap that's not quite closed suddenly sealing?!
                That could be your diverter valve. Flutter noise is normal to a degree and will be noticeable if you run more boost. I was speaking with a friend about his MK6 GTI the other day and he had a very similar problem. In his case the diverter valve was completley shot. He didn't get the whistle but he got lots of flutter and hesitation. If you have VAGCOM you should measure the specified boost vs the actual boost. If there is a big difference then there is a leak in your system somewhere. I know I keep harping on about the Diverter Valve but it is a weak spot and in your case you might have a diaphragm one, not a piston one.
                MY17 206 R-Line Passat Sedan, Pure White, Sunroof | Spectune STG1 | VWR 600 Intake, TMD, Inlet Elbow | Res Delete

                MY 13 Tiguan 155TSI | Pepper Grey | DSG | Leather | RVC | RNS510 | ACC | 18" New York Wheels -SOLD

                Comment

                • #9
                  Don't have vagcom, and pretty sure it is piston type, but might whip it out anyway and have a look to make sure.
                  Cheers

                  Sent from my PadFone 2 using Tapatalk 2
                  2011 147TSi 7spd DSG Reflex Silver, 18" New York Alloys, Leather with MDI, ECB Nudge Bar, Viezu Tune (Work in Progress), Eibach ProKit Springs, SuperPro Poly ALK & Rear Trailing Arm Bushes, H&R 26mm Rear ASB and Whiteline HD Adjustable End-Links, VAR Design 3" Downpipe, Sprint Booster, Auto-Polar FIS+ Advanced Module, GTI Sports Pedals, Flappy Paddle Strg Wheel, LED fogs as DRL, chrome blingy bits

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