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ZERO GRAVITY CHIP?


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That looks like the device that plugs in between you knock sensor and the PCM. It reduces the signal from the knock sensor, so you get less timing retard. Not a bad thing if the knock is not truely knock. I think it is just a resistor or two. You can make one cheaper yourself, or beter yet, get a proper custom tune.

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It is probably an IAT modification using a resistor to fool the computer into thinking it is cooler outside than what it really is. For these motors, avoid it like the plague. $26 is about $23 too much anyway.

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