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Replace or Not to Replace Original OEM Spark Plug Wires

  • 1987
  • 911 Carrera Cabriolet
Mileage: 
5 400
Electrical and Electronic
san francisco, 
California

I was told that if you have an "original" unmodified and bone stock pristine classic Porsche with very, very low miles (5400), the value of the car can be adversly effected by replacing the existing original spark plug wires that happen to be in great condition.   I have a couple of questions:

 

Is this true?  If so, is the value of the car positively effected by leaving them?

Are factory installed original spark plug wires date coded?

 

thanks

 

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