new plugs

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2009-2015 Cadillac CTS-V Performance Mods Discussion, new plugs in Cadillac CTS-V Series Forum - 2009-2015; I'm probably going to be putting headers on my coupe to hook up to my cat back system I already ...
  1. #1
    thegraham77 is offline Cadillac Owners Member
    Automobile(s): 2011 CTS V Coupe Thunder Gray ChromaFlair
    Join Date
    Jul 2012

    new plugs

    I'm probably going to be putting headers on my coupe to hook up to my cat back system I already put on. I also have 2.55 upper, cai, id850 injectors and a tune.
    Anyone recommend TR6 or TR7 plugs? Should I lean toward one over the other? What are the differences?

    Thanks for the input.

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  3. #2
    CADZLA RETURNS is offline Cadillac Owners Member
    Automobile(s): 09 CTS-V Blown by Ed Hutchings, 08 Escalade
    Join Date
    Aug 2012
    Chicago South Burbs

    Re: new plugs

    I believe that most guys are running TR7s or TR7ix. Some are using BR7EF but its a retracted tip plug that makes sense if spraying nos. I'd run TR7's gapped at .030. I believe the number is BP7EFS & 3526.

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