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Cadillac CTS-V 2004-2007 (Gen I) The Caddy with an Attitude...

what spark plugs to run with a maggie

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Old 05-25-2009, 09:42 AM
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Changing the plugs today. Any suggestions on which plugs to use?
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Old 05-25-2009, 09:48 AM
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I'd guess NGK TR6
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Old 05-25-2009, 10:05 AM
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Horse Power?
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Old 05-25-2009, 10:23 AM
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ngk iridiums 1 step colder
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Old 05-25-2009, 01:41 PM
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Both are correct. One step colder than stock. Depends on what you want to spend.
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Old 05-25-2009, 02:28 PM
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What does "Maggie" mean? - I keep coming across that term and I have no idea what it is. Be nice - I'm still learning.
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Old 05-25-2009, 02:31 PM
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Originally Posted by NightStryker
What does "Maggie" mean? - I keep coming across that term and I have no idea what it is. Be nice - I'm still learning.
Magnuson supercharger MP112 is affectionately known as a "Maggie."
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Old 05-25-2009, 02:33 PM
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Or a 122
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Old 05-25-2009, 02:43 PM
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Thank you Gentlemen - the help is much appreciated.
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Old 05-26-2009, 02:10 AM
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id go one range colder and close the gap slightly.

im running .032" gap on my FI camaro. stock gap is .050 i believe. i cant remember what the stock gap is for the LS6 though....
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Old 05-26-2009, 06:46 AM
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Originally Posted by lt4powr
i'd guess ngk tr6
TR55's @.032
Last edited by BacDoc; 05-26-2009 at 06:53 AM.
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Old 05-26-2009, 09:19 AM
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Stock gap is .040 and heat range is = NGK TR55

For the maggie, you need colder plugs: TR6s @ .032-.035 gap
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Old 05-27-2009, 12:34 PM
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thanks for all of the help guys. i didn't get around to it last weekend, but am going to tackle it this coming weekend. any other tips?
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Old 05-27-2009, 04:26 PM
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remove the coil packs first

make sure you have a good spark plug boot puller

have lots of fun
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