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Cupra 300 Valved Exhaust

Discussion in 'Leon Mk3 (2012-2020)' started by Oliver Stapleton, Nov 14, 2019.

  1. Oliver Stapleton

    Oliver Stapleton Active Member

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    Hi all,

    Now, this may be a long shot but... I am looking to add a valved exhaust to my CUPRA R (Based on CUPRA 300). The exhaust would be custom fabricated. I want to control the exhaust valves through the drive selector on the main entertainment screen. (comfort-OFF sport-OFF CUPRA-ON). Is this in any way possible?

    A further question that I have, Would it be possible to have the exhaust fabricated in such a way that when the valve is open the system is straight piped but when the valve is closed it would have a catalytic converter and a muffler/resonator?

    - I already have a TrackSlag 4" Downpipe fitted.
    - Mk3 CUPRA R HATCH (Limited Edition Model)

    Thanks in advance for any help!
     
  2. Adrian300

    Adrian300 Active Member

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    Must be doable as the golf r has this feature.

    Sent from my GM1913 using Tapatalk
     
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  3. motty225

    motty225 B9 S4

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    Gold R is only valved on the back box, the cat/res idea isn't possible
     
  4. Adrian300

    Adrian300 Active Member

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    Yeah sorry i meant the modes working with the valves.

    Sent from my GM1913 using Tapatalk
     
  5. Damo H

    Damo H That Carbon sknob down the street ;)

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    Modes working with the valves is doable.

    JE design’s exhaust for the Cupra does just that. But it’s the only one I know of.

    One with the cat I doubt, as you’d need a completely different map between modes. Not to mention how you’d program the engine to cope with the switch over moment.
     
  6. Robster83

    Robster83 Active Member

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    I like your idea, Koenigsegg seems like it as well, they did it and then patented it.
     
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  7. Oliver Stapleton

    Oliver Stapleton Active Member

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    Cat converter aside, anyone knows anything about the drive select coding?
     

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