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Originally posted by RawBurt:
Originally posted by Stazi:
IT "malfunctioned" cos some numbnut decided to mess with it and in the process mangled all the circuitry.

I wonder who that could've been




LOL Well its pretty fragile!




Seems someone is "Special"


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It was a joke... Jesus

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Originally posted by warmonger:

The electrical ones preserve the shape of the signal oscillation but just drop the voltage and amplitude of the waves.

For as good as they are, I think that soldering a 1uF cap in parallel with the sensor signal wires and a 1 megaOhm resistor in series with the signal wire is very easy.




I believe the circuit changes the shape of the O2 sensor output. It's basically a low pass filter so a square wave input will come out as a rounded off triangle wave albeit lower amplitude and less peak-to-peak. This fools the computer to think the O2 is working correctly.

BTW, I've confirmed that lighting MIL does not enrichen the fuel/air ratio. The blinking MIL however is another story.

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if you go to advance auto parts, the part number is HELP 42009, in case anyone else is interested.


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#1428947 11/07/05 03:33 AM
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I installed these on Friday night and my CEL is back on. I'm not sure of the code yet, but I don't think this will work for us unfortuantely. I'll try to get the code pulled and let you guys know though.


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#1428948 11/07/05 04:15 PM
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I've used this setup in the evo for about 6,000 miles now with no problems. I had to use two of them threaded together to get the sensor far enough out of the exhaust stream.


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Originally posted by TSIN03SE:
Originally posted by warmonger:

The electrical ones preserve the shape of the signal oscillation but just drop the voltage and amplitude of the waves.

For as good as they are, I think that soldering a 1uF cap in parallel with the sensor signal wires and a 1 megaOhm resistor in series with the signal wire is very easy.




I believe the circuit changes the shape of the O2 sensor output. It's basically a low pass filter so a square wave input will come out as a rounded off triangle wave albeit lower amplitude and less peak-to-peak. This fools the computer to think the O2 is working correctly.

BTW, I've confirmed that lighting MIL does not enrichen the fuel/air ratio. The blinking MIL however is another story.




It isn't a square wave to start with. It is generated by the O2 sensor and looks like a sign wave. WT heck told you it was a square wave? It in no way looks like a triangle wave with the MIL eliminators on and so far it appears that it is the lower mean voltage and lower amplitude that tells the pcm it is "leaner".


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#1428950 11/13/05 12:08 AM
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Originally posted by TodrasByAssociation:
I installed these on Friday night and my CEL is back on. I'm not sure of the code yet, but I don't think this will work for us unfortuantely. I'll try to get the code pulled and let you guys know though.





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Originally posted by Stazi:
Originally posted by RawBurt:
That is awesome. I'll most likely do this come time to install the headers.




You already have electronic MIL's you dope!




please explain..


Originally posted by Tourgasm:
Sometimes you can mess up a word so bad that spell check doens't know what the hell you're talking about.


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Originally posted by svt4stv:
Originally posted by Stazi:
Originally posted by RawBurt:
That is awesome. I'll most likely do this come time to install the headers.




You already have electronic MIL's you dope!




please explain..




Rawburt had electronic MIL's that plug in between the O2's installed on his car already


** Mike ** "You might beat me in a straight line, but I'll embarass you in the turns"
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