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Discussion Starter · #1 ·
the car sounds like a wrc rally car when i boost and then lift off the gas, u know the funyn sound those wrc cars make..i dunno whats causing it to sound like that? may be cool in a rally car but it ****ing doing my head in!!

any ideas??
 

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If the re-circ dump valve has been disconnected the boost has no-where to go when you lift off, apart from through the wastegate, hence the chatter. If you haven't disconnected check the vacuum pipe from the inlet to the valve.

I think the chatter is better than a valve.
 

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Surely the chatter is a bad thing. Doesn't it mean the penny valve is slapping against the wastegate hole more than it needs to, thus leading to premature wastegate / penny valve failure?
 

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Mine does this as well.I posted a tread about it 2 weeks ago.If you boost then lift of but still feathering the throtle the wastegate flutters,then the dump valve goes off.bo bo bo bo bo bo tiss:D
 
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