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Discussion Starter · #1 ·
Need some help in diagnosing this sound,


any ideas, its a very faint but louder in person high pitch sound (Rubbing finger around the rim of a wine glass) when increasing and decreasing revs, you cannot hear it outside at all so dont think its the engine.
 

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Do you have an amp installed or have the headunit on when this is happening?
Does it get louder or anything when you rev harder?
 
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