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Warning: URD MAF is very sensitive to RF interference

Discussion in 'Underdog Racing Development' started by BarefootBandit, Apr 27, 2012.

  1. Apr 27, 2012 at 2:41 PM
    #1
    BarefootBandit

    #1
    BarefootBandit [OP] Well-Known Member

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    I have a URD MAF in my 06 Tacoma. When I key up my 100 watt VHF radio, the engine stalls.

    If I hold the URF MAF in my hand (while installed to the truck), the engine will literally respond to its physical movement IE: while I'm transmitting my 100 watt radio, if I'm holding the MAF in my left hand, the engine will drop idle to a shuddering 500rpm, if I switch it to right hand, it will stall. (while sitting in the passenger seat)

    I will make a video showing this as soon as I can.
     
    BarefootBandit, Apr 27, 2012
    #1
  2. Apr 27, 2012 at 6:55 PM
    #2
    S7ICKlVlAN

    #2
    S7ICKlVlAN Cpt. Bubbleguts

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    S7ICKlVlAN, Apr 27, 2012
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  3. Apr 28, 2012 at 12:35 PM
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    BarefootBandit

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    BarefootBandit [OP] Well-Known Member

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    BarefootBandit, Apr 28, 2012
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  4. Apr 28, 2012 at 12:37 PM
    #4
    KenLyns

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    KenLyns 8.75" Third Member

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    KenLyns, Apr 28, 2012
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  5. Apr 28, 2012 at 12:42 PM
    #5
    Bishop2Queens6

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    Bishop2Queens6 Well-Known Member

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    Wrap it in any fine metal mesh fabric. It will blocks any outside radio interference because you're making a faraday cage with the mesh isolating URD MAF from any interference.

    That's for DIY, but if you're not up to it, you can buy a faraday cage bag from here:

    http://techprotectbag.com/

    Their products are designed to protect sensitive electronic equipment from EMP damage after a nuclear blast or even if someone sets off an EMP pulse. The bag big enough to fit your URD MAF is less than $10 so its a quick and cheap fix going that route.

    Here is a youtube video review about the bag:

    http://www.equip2endure.com/WatchVideo.aspx?id=442
     
    Bishop2Queens6, Apr 28, 2012
    #5
  6. Apr 28, 2012 at 4:08 PM
    #6
    BarefootBandit

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    BarefootBandit [OP] Well-Known Member

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    We have millions of anti static bags at my job so I'll try that method.
    I'll also ask the radio engineers at my company for some advice.

    I can't be the only person to come across this.

    If there are desert racing Tacomas with URD MAF's in them, chances are they will have a VHF race radio in them too.
     
    BarefootBandit, Apr 28, 2012
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  7. Apr 28, 2012 at 4:11 PM
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    Steves104x4

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    Steves104x4 Well-Known Member

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    Steves104x4, Apr 28, 2012
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  8. Apr 28, 2012 at 4:13 PM
    #8
    GregLee98

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    GregLee98 Well-Known Member

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    GregLee98, Apr 28, 2012
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  9. Apr 30, 2012 at 3:56 PM
    #9
    BarefootBandit

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    BarefootBandit [OP] Well-Known Member

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    Spoke to URD today. They told me that my leads are way too long, and there is too much RF leaking inside my truck (which is true since I have a diplexer and a 100 watt amplifier).

    I guess I'm going to take it out


    aka it will be for sale soon lol.
     
    BarefootBandit, Apr 30, 2012
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  10. Apr 30, 2012 at 6:42 PM
    #10
    Bishop2Queens6

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    Bishop2Queens6 Well-Known Member

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    The shealding bag didn't work?
     
    Bishop2Queens6, Apr 30, 2012
    #10
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