2nd Gen JCW Removed Factory JCW Resonator??

Discussion in '2nd Generation: 2007+ R55 through R61' started by CHKMINI, Oct 30, 2010.

  1. CHKMINI

    CHKMINI Club Coordinator
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    Sep 1, 2009
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    Who has removed the resonator on their '09 Factory JCW? Is there a noticeable change in performance, and if so, what changes did you notice? How drastic did the removal of the resonator effect exhaust sound? Has the removal caused codes to be thrown?
    I'm considering removal of mine if the performance improves but having experienced the constant drone of a MaganaFlow exhaust on my previous R53, I want to keep any increase to the noise level minimal.
     
  2. Rixter

    Rixter Well-Known Member

    Jun 14, 2009
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    I doubt you're going to see much of a performance gain. As far as throwing a CEL goes, there's no sensors down that area. The sensors are just on the lower part of the downpipe so you'd be fine with that. I have no idea what it would sound like. If you do it, be sure to record a before and after version :D
     
  3. iwashmycar

    iwashmycar Active Member

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    I think its all sound.

    If you look through the Factory JCW exhaust that resonator is 100% pass through... there are just gaps on the edges for exhaust to go.

    Mine was cut in half for shipping and I took a look
     
  4. GreyLens

    GreyLens New Member
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    I installed the NM Charge Tube which also removes the resonator. Nothing but improvement for performance and sound...all good.
     
  5. CHKMINI

    CHKMINI Club Coordinator
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    Thanks Greylens. I was referring to the exhaust resonator in-line before the muffler. I have looked at the NM charge tube though and it is on my list of future mods. Any additional opinions on the resonator...anyone?
     

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