All Things Mk5 > How to Guides / Troubleshooting

Whistle even with DV Rev D

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johnhol78:
Swapped the Diverter valve after a few weeks of owning the car and found 6 hoes/slits in it  :surprised:

Since then it's been ok, had a Revo trial which was great though I really notice a whistle while accelerating. This is supposed to be very feint though it's noticeable even with the windows up.

Anyone any suggestions? Sounds like a boost leak but can this be easily diagnosed?

Richn83:
You should still have a whistle from the Turbo spinning, or you could have a split pipe somewhere else.  Best bet is to VCDS log your boost.

PDT:
Is the whistle only apperent under load?

johnhol78:

--- Quote from: PDT on March 31, 2011, 11:51:26 am ---Is the whistle only apperent under load?

--- End quote ---

Yep, almost like the whistle yuou get when DV (old one) has gone but I have new revision D.

Richn83:
Check the DV is still nice and tight then check for boost leaks elsewhere, if your previous DV was loosing boost then the rest of the system probably hasnt been under pressure for awhile and REVO map will have upped the amount supplied so it could have blown a hose or split a hose that was on its way out.

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