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151 Posts
Discussion Starter #1
I am running the stock bypass valve and when I go WOT then shift gears it makes 2 to 3 whistle sounds that are kind of joined. I am guessing that is fluttering but it only happens when i shift, flooring it then releasing sounds normal it only makes a single wistle like a type S but much lower. I don't get it oh well please share any experiences
 

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aka FredMk3
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586 Posts
You should only hear your bov when you shift or release the accelerator, your case seems find IMO. Your bov may make the sound a bit longer when you shift in higher gear(2-3-4-5) because you got more boost than in first.
 

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Discussion Starter #3
I dunno I just dont want it to be compressor surge you know what im saying. O well I'll just wait till i get the evo8 one before i boost again.
 

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aka FredMk3
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ok, anyway if I understand what you describe , your bov is ok.
 
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