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Thread: Drilling airbox cause whistling in top rev range?

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    Default Drilling airbox cause whistling in top rev range?

    As above only just noticed it qen I get 4000 on rev counter start to get this annoying whistling noise wondering if drilling air box could cause it

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    Regular Member TimTay's Avatar
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    If im right its the sound of air rushing over the butterfly in the throttle body. ive got a propper loud "Induction Whistle" after fitting my green cotton cone. to be honest i love it tho cleaning out my throttle body did quieten it down a tad.

    fair enough mines a 3.2 but would imagine it would be the same cause, unless all your drilling ya box has given ya car a lisp lol

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    Ex Vec-C Admin Deztroyer's Avatar
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    It's the turbo spooling especially at over 4000 rpm

    0-Large smile ......every time it's driven

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    Quote Originally Posted by deztroyer View Post
    It's the turbo spooling especially at over 4000 rpm
    A high pitched whistle dez?

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    Ex Vec-C Admin Deztroyer's Avatar
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    Yup

    Pm sent with linky to my video on an open filter.... Watch the rev counter hit 4k and the noise starts

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