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Old 11-14-2012, 04:52 PM
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Fast Bob Fast Bob is offline
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Join Date: Jun 2004
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Mein Auto: 2004 330Ci ZHP 3 pedals
I remember when the quad-electrode plugs were first introduced around 25 years ago, and recall that the reason given for their design was to be more efficient in engines with higher-than-usual combustion chamber pressures, i.e., forced-induction and high-compression N/A engines. There were lots of turbo motors around back then.... it`s always been controversial as to whether the plugs actually help or not....
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