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2.0TSI CCZB FR MK2 Power loss (Whistle) GFB+?

Discussion in 'Leon Mk2' started by Enhanced_uk, Jul 14, 2019.

  1. Enhanced_uk

    Enhanced_uk Member

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    Hi guys,
    I have a stage 2+ FR 2.0TSI ( not tfsi) 2009

    I've had a strange train whistle/screem coming on boost. I've noticed the car has a very slight decreas in acceleration turbo power. But up in the revs it fly's. I've installed a DV GFB+ I'm thinking it's something to do with this ?

    Things I have replaced
    Actuator
    N75 boost solonoid

    My mods
    - Ram air intake
    - Intercooler
    - Hybrid turbo
    - 3inch turbo back miltek
    - R8 Coils
    - GFB DV+
    - Runner flaps delete
    - MAF blank (Reads from MAP)
     
  2. PaulusB

    PaulusB Full Member

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    I had the same noise my PVC was bad.

    Verstuurd vanaf mijn SM-G930F met Tapatalk
     
  3. Enhanced_uk

    Enhanced_uk Member

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    Hello,

    I was thinking this. But I also have a new PVC and latest revision. Maybe I will remove and put it back on see if it works.
     
  4. Legojon

    Legojon Will work for TTE420
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    If it was me, I'd temporarily change the GFB back to a normal DV and see if the issue goes away. If it does, I'd lube up the GFB and put it back on. New rev pcv shouldn't be an issue.
     
  5. Hawkers

    Hawkers Active Member

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    Take the oil stick out with the engine running it should sound rough, if it still runs like normal then your PVC is bad.

    But if only just happened when you changed the DV then is an obvious thing to check, is everything tightened, did you change the correct springs etc.
     
  6. Enhanced_uk

    Enhanced_uk Member

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    Hi Mate, I will try what you said about the dip stick. The PCV is new from TPS original and latest revision. I did take it off again to check it and put it back on. Whistle is still there. Yep I changed it to the book the GFB springs everything. I'm going to re oil and make sure bolts are done up properly.
    Nightmare. Don't boost as it should 4k is full boost. Turbo kicks in 2kish
     
  7. Hawkers

    Hawkers Active Member

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    4k is around peak boost to be honest then does drop off.

    Does the whistle sound like this from your intake?
     
  8. Enhanced_uk

    Enhanced_uk Member

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    Mines more of a screetch. So I took out dipstick the engine hardly changed its tune. The notice was about 4% change lol I chat see anyleaks and the PCv is new :(
     
  9. Legojon

    Legojon Will work for TTE420
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    Did you change the gasket as well?
     
  10. Enhanced_uk

    Enhanced_uk Member

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    Yep gasket was new. Took it off a couple days ago to inspect it. All looks good. ONE thing I have noticed is.... I can hear a faint hissing sound on idle... When I press the brake peddle down it goes away ? When I release it comes back. Strange.

    Apart from that I can't source this issue. Going to revert back to a normal DV and see.
     
  11. Jester

    Jester Active Member

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    Hiss that goes away when applying brake sounds related to the vacuum feed going to the brake servo. This may or may not be normal behaviour, however I'd suggest somethings amiss, possibly a leak in the vacuum line feeding the brake servo. If so this might also be causing a general vacuum leaking with the engine affecting low speed running.
    Might be a problem with the servo itself. Again depends on how loud etc, it might be perfectly normal.

    I'd suggest at least giving the brake-related vacuum lines a check over just in case.
     
  12. Enhanced_uk

    Enhanced_uk Member

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    Thanks for your help buddy I will check this
     
  13. PaulusB

    PaulusB Full Member

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    Check also the dipstick and the breather hose on the back off the crankcase for vacuum leaks.

    Verstuurd vanaf mijn SM-G970F met Tapatalk
     

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