Maggie Spark Plugs

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2004-2007 Cadillac CTS-V Performance Mods Discussion, Maggie Spark Plugs in Cadillac CTS-V Series Forum - 2004 - 2007; I was looking at going with the NGK TR6IX plugs, but think I'm going to go with the AC Delco ...
  1. #1
    barrok69's Avatar
    barrok69 is offline Cadillac Owners Fanatic
    Automobile(s): 2005 CTS-V Maggied
    Join Date
    Mar 2012

    Maggie Spark Plugs

    I was looking at going with the NGK TR6IX plugs, but think I'm going to go with the AC Delco alternatives 41-104 (iridium). They are also one step colder than stock gapped at 0.040" and what is used in the LSA/LS9 motor. I've always had no complaints with Delco's in my other vehicles.

    I've read that i should gap them to 0.035" is that correct? Right now I have some junk champions in the car from when I bought it used. Keeping in mind I have a Maggie.

    Also for anybody interested.... there is a wicked rebate going on for these plugs too. $2 mail-in per plug !! rockauto has the plugs for $4.71/each. So for $38 worth of plugs minus $16 it's only costing $22 + shipping. Rediculous.

    Here is the rebate form. Looks like its good until december 2013!

    Look up 2010-2011 CTS-V spark plugs and they will be in the ignition category (there is no hardlink)

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  3. #2
    OneFast V is offline Cadillac Owners Enthusiast
    Automobile(s): 2005 Raven Black CTS-V
    Join Date
    Mar 2010
    San Jose, CA

    Re: Maggie Spark Plugs

    I run the factory remommended gap and I did not go one step colder on my spark plugs

  4. #3
    Twitch's Avatar
    Twitch is offline Cadillac Owners Connoisseur
    Automobile(s): '05 CTS-V, '00 SLS, 98 SLS, 89 Eldo, '80 Eldo
    Join Date
    Mar 2006

    Re: Maggie Spark Plugs

    I'm running TR6 with no noticeable issues. I'm sure you'll be happy with AC delco.

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  6. #4
    Skidmarcx's Avatar
    Skidmarcx is offline Cadillac Owners Fanatic
    Automobile(s): NONE!
    Join Date
    May 2011
    Phoenix, AZ
    TR6s here gapped at .035... Im sure Delco will work just fine

  7. #5
    rand49er's Avatar
    rand49er is offline All V1s should be maggied.
    Automobile(s): 2005 CTS-V, 2017 Volt Premier
    Join Date
    Jan 2005
    South Lyon, MI

    Re: Maggie Spark Plugs

    OEM gapped at OEM here.
    '05 CTS-V, Maggie, Kooks, Hotchkis, Ground Control, Corsa, B&M, DSS/Hendrix, Full 3M Clear Bra, Autovation, V Headrests, CTS Console, STS-V 55w Fogs, Black Vette FRCs, Specter Werkes, Katech LS9 Clutch, SS Brake Lines, Heavymetals U-Turn Fuel Line Eliminator, Momo Combat Evo Shift Knob, Wldwhl Clear Sidemarkers, Linea Corse LC855 Wheels, plus a couple more. Mustang dyno'd at 472 RWHP/411 RWTQ.

  8. #6
    izcain's Avatar
    izcain is offline Cadillac Owners Fanatic
    Automobile(s): Without a caddy
    Join Date
    Jan 2013
    Port Angeles

    Re: Maggie Spark Plugs

    Had tr6's now has br7ef's changed due to the increased safety of a non projected tip plug as well as 1 heat range colder. All it takes is a nice little misfire and pop. Extra insurance not to having it poke into the chamber to far. Car runs fine with them. To each there own though.

    tr6 on the right

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