Thread: ARRGHHH! which plug champ c57c or c59c!?!?
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Old Mar 29, 2006 | 09:22 PM
  #10  
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Combi_Chris
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59c for anything over 14 psi

the other for up to 14 psi , its what ive used on 4 turbos , no problems whatso ever , i dont think theres a best spark plug either
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