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Warning: URD MAF is very sensitive to RF interference

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Old 04-27-2012, 02:41 PM   #1
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Warning: URD MAF is very sensitive to RF interference

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.
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Old 04-28-2012, 12:35 PM   #3
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http://www.youtube.com/watch?v=EYgZkXzfszQ
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Old 04-28-2012, 12:37 PM   #4
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WITCHCRAFT!

Quick, line your glovebox with tinfoil!
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Old 04-28-2012, 12:42 PM   #5
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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
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Old 04-28-2012, 04:08 PM   #6
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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.
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Old 04-28-2012, 04:11 PM   #7
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Oh, my. Please, continue.
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Old 04-30-2012, 03:56 PM   #9
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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.
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Old 04-30-2012, 06:42 PM   #10
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The shealding bag didn't work?
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