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This little box is attached to the harness going to the IP Optic. What is it?? Oop's almost forgot, this is on the 95 Blazer. Soot engine.


I'm also doing my down pipe if i can get it done today, wait till you guys see the old one. OMG, how's it run!
 

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Well i don't think i'll be making any calls to Mars in the next little while, but if i do we should have a good connection then...
 

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The RF interference will show up as noise in your audio player.

Sincerely,

Rob :)
 

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It is also a filter for the optic sensor to prevent interference from other devices with it. My suburban has one on it.
Ding Ding Ding! we have a winner!

It not to prevent interference with your radio, it to prevent interference with the optic sensor. Muy high frequencies in those lines, a stray signal could really screw the pooch!

I'd make sure to run one.

Tim
 

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In every case that I've removed this device, it did not hurt performance. It actually seems to help eliminate AM radio static. I've also known removal of this device to help where repeated pumps were replaced due to PO251 etc codes...
 

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In every case that I've removed this device, it did not hurt performance. It actually seems to help eliminate AM radio static. I've also known removal of this device to help where repeated pumps were replaced due to PO251 etc codes...
Really...

That seem conter-intuitive. But high frequencies are just to the left of witchcraft to me.

I got enough headaches keeping the 60hz power stuff from cross-talking to lower voltage signals at work...

Tim
 

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Should I be concerned if I dont have one of these? I think i have seen these "filters" on the SS site and a few others. But I was under the impression my applications didnt require it. Someone feel free to enlighten me.
 

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Isn't this thought to be the cuplrit behind the 1400 - 1500 rpm "fishbite" or churgle or what have you? Woking off of very vague memories here....
 

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In every case that I've removed this device, it did not hurt performance. It actually seems to help eliminate AM radio static. I've also known removal of this device to help where repeated pumps were replaced due to PO251 etc codes...
I wounder:cool: than if that is why I get a whisle sound when I have my radio on AM, and go under a overpass or step on the brakes? NEVER NEVER NEVER does that on FM only AM. I've checked / replaced all grounds that I know of and even add bigger wire to some. Anyone know if these thing go bad? My's about 11yr old with 220,000 miles on it. O well got XM now.:ro)
 
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