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-   -   Warning: URD MAF is very sensitive to RF interference (http://www.tacomaworld.com/forum/underdog-racing-development/217183-warning-urd-maf-very-sensitive-rf-interference.html)

BarefootBandit 04-27-2012 02:41 PM

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.

S7ICKlVlAN 04-27-2012 06:55 PM


BarefootBandit 04-28-2012 12:35 PM


KenLyns 04-28-2012 12:37 PM


Quick, line your glovebox with tinfoil!

Bishop2Queens6 04-28-2012 12:42 PM

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:


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:


BarefootBandit 04-28-2012 04:08 PM

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.

Steves104x4 04-28-2012 04:11 PM

Oh, my. Please, continue.

GregLee98 04-28-2012 04:13 PM


BarefootBandit 04-30-2012 03:56 PM

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.

Bishop2Queens6 04-30-2012 06:42 PM

The shealding bag didn't work?

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