Notts_TT Posted June 19, 2015 Share Posted June 19, 2015 Hi While gently accelerating under 4000rpm there a groan comes from turbo, quite a long sound not a quick chirp... Any ideas ??? Thanks Quote Link to comment Share on other sites More sharing options...
Samurai 20V Posted June 20, 2015 Share Posted June 20, 2015 I had similar, when I researched it seemed to be the reed valve.. I never fixed it, when I went TTC it went away as the boost low down is minimal.. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 20, 2015 Share Posted June 20, 2015 Put the stock air box back and it will go away. Quote Link to comment Share on other sites More sharing options...
Dnk Posted June 20, 2015 Share Posted June 20, 2015 Put the stock air box back and it will go away. Quote Link to comment Share on other sites More sharing options...
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