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whistle

  1. 3rd Generation Altima (2002-2006)
    Hi, I have a 2005 Nissan Altima 2.5S, I recently replaced the pre-cat header with a new aftermarket header for better performance. Since the. I have heard a strange whistle whenever I accelerate, to me it sounds like a gurgling whistle and it seems to he more pronounced when it shifts into...
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