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      10-19-2010, 11:03 PM   #187
e90pilot
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Drives: E90 325i
Join Date: Jul 2005
Location: Oakland, CA

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From what I gather, those wires go to the cam position sensor and the valve control modules will open the valves at the correct rpm regardless of which plug you use. Those pluges, in essence, give the valves rpm info.
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'06 Arctic Metallic 325i | Sport Package | 6MT | Dinan Stage III suspension | Dinan exhaust | 330i manifold swap! Click here! | Active Autowerke tune | 135i Brake Calipers | Deiselboost caliper brackets | E46 M3 front rotors