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Black Dynamite
1991 HONDA Civic
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it's a resistor kinda like those on a mass airflow sensor except it's sends a steady signal to the CPU pretty much tricking it that your running cold air all the time or in a sense with this one messing with the normal signature you get from your normal o2 snesor tricking the ECU to do something else. Never heard of them actually working right or giving those kinda of numbers MO worthless
 

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not a resistor... a ferrite core surrounding the wires.... helps dispurse signal noize.... u can buy them for about 1/4cent each 1/2 if u buy bulk...




scam written all over it.. though it might actually help somewhat.
 
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