Plug Wires
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Plug Wires
I was shopping around for some plug wires for my 2000 Expedition with the 5.4 and was trying to find some high performance wires for a decent price. The only ones I could find were $125 or more. Is this a normal price and what do you guys recommend for the wires. Also is it not even worth it and should I just put factory wires on it.
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The 4.6 originally had coil packs and spark plug wires. In later years the design was changed to COPs on the 4.6, just like the ones on the 5.4 engine.
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There is a vendor on this site that sells high output COPs. His claim is higher voltage into a wider plug gap resulting in less wasted fuel. To me it's just a bunch of snake oil, but that's just my opinion. Years ago in the pre-PCM days it was true, but with computers controlling every aspect of engines and transmissions these days, efficiency is about as good as you're going to get. I would (and did) get a set of 8 COPs of eBay for around $80 and installed those.
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Fleet Owner
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Here is the vendor I referred to:
Ford Truck Enthusiasts Forums - View Profile: PerfDistIgnition
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I have seen dyno results on coils from this compainy used on mustangs. The one that i am thinging of was on a 5.0l. I know that is not quite the same but it did make more power. I can't say as it did anything for mileage. The ingnition system on your 5.4l i much more powerful than the old 5.0l system, so i wouldn't expect any noticible difference
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