How-To: PAIR removal for 5th Generation

Discussion in '5th Generation 1998-2001' started by jeffrozar, Aug 1, 2011.

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  1. jeffrozar

    jeffrozar New Member

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    Sounds like an air intake leak somewhere to me.
     
  2. profarab

    profarab New Member

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    Just had this done on my Gen 6. MUCH smoother at low RPMs. Noticeable improvement on gas mileage (almost 3 MPG more), slightly louder due to intake noise but more than acceptable. Very satisfied
     
  3. profarab

    profarab New Member

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    :confused: Not sure how the hell that ad got on my post!
     
  4. sleve7n

    sleve7n New Member

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    Thanx mate great help!!!!
     
  5. ridervfr

    ridervfr Member

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    Nice pictures, have'nt really been into these bikes but enjoy reading and looking at the pictures :thumbsup: did this to my two gen 3 bikes with no regret, my ninja 500 I left intact and will continue to, really comparing apples and oranges. Good job.
     
  6. FJ12rydertoo

    FJ12rydertoo Member

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    What a coincidence, I have some PAIR block-off caps coming so this was a nice thing to have pop up. I didn't figure it would be too bad of a job, but ya never know.
     
  7. mello dude

    mello dude Member

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    Hmm, from whose could that be? He he




    Thanks!
     
  8. mello dude

    mello dude Member

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    OK gang...
    I'm offering pair valve covers that are waaaaaay thicker and better than the picture above. Exact shape of stock valve cover. (Fit CRB1100XX too)
    [​IMG]
    [​IMG]
    [​IMG]
    Install photos by VFRcapn

    $29.95 + $5.80shipping (US)
    Stainless steel cap screws included.

    PM interest please.

    MD
     
    Last edited: Jul 19, 2014
  9. GreggNJ

    GreggNJ New Member

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    Sorry to dig up an old thread, but what size cap is this? I just removed my PAIR system and need to block off the port on the airbox.

    Thanks!
     
  10. Scott_Lilliott

    Scott_Lilliott New Member

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    To block off the airbox spigot, use a 5/8" chair leg protector
     
  11. GreggNJ

    GreggNJ New Member

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    Much obliged, thank you!
     
  12. tinkerinWstuff

    tinkerinWstuff Administrator Staff Member

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    I did not see it noted anywhere here that PAIR block off shouldn't have any affect unless you are FI and have O2 sensors. So it wouldn't give any benefit unless you're 2000 and 2001 gen 5. You can block the PAIR on a dyno and see zero change.
     
  13. TNRabbit

    TNRabbit New Member

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    PAIR blockoff WILL improve sub-3000 rpm smoothness....
     
  14. tinkerinWstuff

    tinkerinWstuff Administrator Staff Member

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    On a bike with O2 sensors.
     
  15. TNRabbit

    TNRabbit New Member

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    I'm telling you, I have a 1998 & it dramatically improved the performance under 3000 rpm. No O2 sensors.
     
  16. tinkerinWstuff

    tinkerinWstuff Administrator Staff Member

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    From my reading (and experience with 1990 & 1998 bike), the VFR is not widely known for having low RPM issues until they put FI and O2 sensors on it. If you study the system, it can't have any affect unless you run a closed loop feedback system (O2 sensors). If yours had a low RPM issue, maybe there was some other problem with the PAIR like a vacuum leak or reed valves failing to seal.

    Not here to debate and I've said my peace. No desire to derail this further. Anyone interested in facts can do their own research.
     
  17. FJ12rydertoo

    FJ12rydertoo Member

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    Gawd I hate it when facts and real life don't get along. I did the PAIR block off on my '99 and it has made the low rpm smoother, not a huge difference, but noticeable nonetheless. But I also disabled the flapper valve, so that might be part of it too.
     
  18. mello dude

    mello dude Member

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    Bumping for the halibut... the photos of the OPs plates inspired me to make my own. Check post 28...
     
  19. tinkerinWstuff

    tinkerinWstuff Administrator Staff Member

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    Disabling the flapper thereby eliminating the velocity effect of the snorkel and reducing low end power is sure to smooth thing out a touch.

    http://www.calsci.com/motorcycleinfo/Airboxes.html
     
    Last edited: Sep 20, 2015
  20. NorcalBoy

    NorcalBoy Member

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    Smoothbore's with no airbox, no snorkel, and no flapper......:potstir:
     
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