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Smog Block Off Plates

This is a discussion on Smog Block Off Plates within the YXZ Engine forums, part of the Yamaha YXZ Technical category; I've read folks putting these Smog Block Off Plates so their O2 sensors work properly, but is there any performance gain... say for folks that ...

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    Senior Member sup44's Avatar
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    Smog Block Off Plates

    I've read folks putting these Smog Block Off Plates so their O2 sensors work properly, but is there any performance gain... say for folks that dont want to install a sensor at this point.. just keeping it stock and removing the baffle.. I'm thinking there's likely no performance gain by restricting these air intakes, but just thought I ask other opinions of those that may have done this at some point..

    Smog Block Off Plates-fz09_smog-01.jpg
    Last edited by 6gearz; 03-29-2016 at 09:08 AM. Reason: removed nonSV store link.

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    no gain and the rubber plug they send does not fit, you have to source one at the auto store. It does get rid of the unsightly mess there though

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    Senior Member scottdmax's Avatar
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    ^^^^^ What he said, and one more tip....buy the kit for the FZ-09 motorcycle; it's the exact same fit on the YXZ, and they can be had for less $$$.
    Good mod. Really cleans up the look of the top of the engine, and eliminates decel popping.
    Reamer77 likes this.

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    Senior Member sup44's Avatar
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    Quote Originally Posted by McKay View Post
    no gain and the rubber plug they send does not fit, you have to source one at the auto store. It does get rid of the unsightly mess there though
    im not intimate enough with this engine yet.. dont even know what unsightly mess ur talking about.. lol. ill have to go check it out when I get home..

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    Senior Member scottdmax's Avatar
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    Quote Originally Posted by sup44 View Post
    im not intimate enough with this engine yet.. dont even know what unsightly mess ur talking about.. lol. ill have to go check it out when I get home..
    You'll see it. All the hoses and crap above the valve cover.

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    Senior Member sup44's Avatar
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    Quote Originally Posted by scottdmax View Post
    You'll see it. All the hoses and crap above the valve cover.
    So these hoses and crap.. its ok to take all this out and what ever the hoses are connected to, even if keeping stock? If so, Im on it ...
    Attached Thumbnails Attached Thumbnails Smog Block Off Plates-img_8169-smogblockoff.jpg  

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    Senior Member sup44's Avatar
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    bought em.. thanks Scott for the FZ-09 tip.. save about $10..

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    Senior Member scottdmax's Avatar
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    Quote Originally Posted by sup44 View Post
    So these hoses and crap.. its ok to take all this out and what ever the hoses are connected to, even if keeping stock? If so, Im on it ...
    Yep. Pull it all out and disconnect the wiring connector. Plug off the airbox nipple.
    Install plates and done.

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    Senior Member scottdmax's Avatar
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    Quote Originally Posted by sup44 View Post
    bought em.. thanks Scott for the FZ-09 tip.. save about $10..
    No problem. No use spending more. Marketing trickery is all. Pays to do your homework on stuff like this.

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    Quote Originally Posted by scottdmax View Post
    Yep. Pull it all out and disconnect the wiring connector. Plug off the airbox nipple.
    Install plates and done.
    Dont forget to get the right sized nipple on the airbox.

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