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Thread: F430 Exhaust valve bypass

  1. #1
    Join Date
    May 2010
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    Surrey
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    Simon
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    247

    Default F430 Exhaust valve bypass

    Hi - am sure this has appears on the site hundreds of times...but have tried searching and haven't found the answer.

    If anyone could send me a link, would be grateful.

    Am interested in bypassing the exhaust valve on my 430, allowing a louder echaust sound at lower revs/on idle
    I believe it is a simple job, disconnecting 2 pipes, and covering up the ends....I just don't know which pipes!

    Can anyone assist?

  2. #2
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    Dec 2009
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    UK
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    Slapshot
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    513

    Default

    There should be a small diameter rubber hose connected to the red-circled area in the photo below. Disconnect the hose and stuff a golf tee in the end. Then do the same with the valve on the other side of the car.

    Name:  valve.jpg
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    Last edited by slapshot; 23-02-2012 at 03:08 PM.

  3. #3
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    May 2010
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    Simon
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    Default

    Thank you very much indeed for that response and pic...perfect - can't wait to try it now!
    Thank you

  4. #4
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    Quote Originally Posted by Siy View Post
    Thank you very much indeed for that response and pic...perfect - can't wait to try it now!
    Thank you
    I've been running mine 'unleashed' like this for a year now as it sound like a Ferrari should ALL the time. Particularly when starting, at tick over, and pootling around town.

    An additional benefit is that you don't get the black staining on the bodywork underneath the outer exhaust tips like you do with the vacuum hoses connected.

    Apparently the only downside is a slight loss of torque at low revs, but I've never noticed.
    Last edited by slapshot; 23-02-2012 at 03:25 PM.

  5. #5
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    Default

    Think there is probably enough torque there anyway!

  6. #6
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    Jun 2009
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    Lincolnshire
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    Gareth
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    166

    Default

    What are the jubilee clips and foil tape for on the silencer? Presumably they are not connected to the valve opening mod

  7. #7
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    Quote Originally Posted by big g View Post
    What are the jubilee clips and foil tape for on the silencer? Presumably they are not connected to the valve opening mod
    It's my solution to stop the white insulating powder escaping from the muffler and coating the engine bay. It's a common problem on the F430 and 360 Modena (apparently).

  8. #8
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    Simon
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    Default

    Does that work? If it doesn't escape there, where does the white powder go to?

  9. #9
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    Slapshot
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    Default

    Quote Originally Posted by Siy View Post
    Does that work? If it doesn't escape there, where does the white powder go to?
    It stays in the muffler body where it belongs.

  10. #10
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    May 2010
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    Simon
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    ahaaa.....genius!

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