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Registered
Join Date: Jun 2001
Posts: 25
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Shielded plug wires (CIS)
Is there a reason that shielded plug wires are OE for 911s with CIS? They seem to have occurred and disappeared at the same time as CIS, but since CIS is a mechanical injection system I don't understand what would make shielded wires necessary.
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07-10-2002, 05:11 PM
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Registered
Join Date: Sep 2000
Location: Shreveport, La.
Posts: 1,710
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I think mainly to decrease crossfiring on the already backfire prone CIS system. I went back with the regular wires on my '83. No problems. No oxy sensor and run it a tad on the rich side. No popping.
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Robert Stoll 83 911 SC 83 944 |
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07-10-2002, 06:01 PM
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Registered
Join Date: Feb 2001
Location: South of the Mason-Dixon Line
Posts: 3,722
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The non-shielded wires were not standard OEM on my 73.5 with CIS although when I bought the car they were onboard. I changed them out for the OEM black factory units that work just fine. Besides the OEM black rubber units are far less expensive and do the same job!
Regards Bob |
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07-10-2002, 06:25 PM
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