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Originally Posted by wheee!
The speed of the signal from the sensors to the actuators IS affected by the ground path IF there is resistance between the sensors and the actuators. Hence a stronger/better ground will complete the signal more efficiently. Albeit minutely...  |
The accuracy of the volts or ohms reading might be affected, but any change in the "speed" of the signal is so small as to be completely ignorable. I doubt you could even find the equipment to measure it accurately
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together to ground can only help further down the road when corrosion/wear and tear etc start to take their toll.
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Well, the other side of that argument is that if you added the ground wires to a new car, they're going wear/corrode at the same rate as the factory wiring. At some point you'll have to fix one or both down the road.