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07-02-2008 #5
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- Aug 2005
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- Patterson, NY
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If you have one coil per cylinder you need a cam sync signal, so it knows if the engine is supposed to fire cylinder 1 or cylinder 6, for instance. (If you run a full-sequential EFI system you need the signal for the same reason, but for the injectors.)
If you use a "wasted spark" setup, where one coil is used for two cylinders then all you need is the crank trigger. (With EFI if you run a semi-sequential system it works the same.)
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