Someone explain the PAIR mod one more time please

Discussion in '6th Generation 2002-2013' started by Sirdoh, May 4, 2020.

  1. Sirdoh

    Sirdoh New Member

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    Its the second time that I've done the mod, blocking the pipe with a marble and disconnecting the electrics. The trouble is that is runs like a bag of crap when it's cold. Today someone told me that you're only supposed to disconnect the electrics, not block the pipe.

    Which is it please and how is that valve actually working?
     
  2. Terry Smith

    Terry Smith Member

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    The PAIR valve introduces filtered air into the exhaust port to reduce unburnt fuel in the exhaust gases. It consist of the PAIR reed valve at the cylinder head, a solenoid valve driven by the ECU, and a hose to link these to the filtered side of the airbox. Whether you disconnect the solenoid is irrelevant, but you do need to seal the port from the airbox (so you don't suck unfiltered air back in to the airbox) and seal the air supply to the reed valve (so you don't add any air into the exhaust). I used blanking plates and removed the reed valve lids and the reeds themselves, but left the rubber gaskets in place to seal to my blanking plates. I disconnected and carefully stored the hoses/solenoid in the bin, and put a rubber cap over the spigot at the airbox.
     
  3. Sirdoh

    Sirdoh New Member

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    Yeah that what I thought. It runs like shit from cold. I adjusted the idle RPM at normal temp and it still runs like shit from cold. I've just put it back for the second time. I can't figure out why it runs well for some people and not others.
     
  4. Terry Smith

    Terry Smith Member

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    Are you getting the normal fast idle when the bike is cold?
     
  5. Sirdoh

    Sirdoh New Member

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    A bit. It starts as if its on 2 cylinders After it settles it goes to 1000 and then creeps up to 2000. Until it warms up. Then its ok.
     
  6. Terry Smith

    Terry Smith Member

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    Is it always like that or just with the PAIR disabled?
     
  7. Sirdoh

    Sirdoh New Member

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    only with the PAIR disabled.
     
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