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What Spark Plugs do you use?

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Old Aug 12, 2011 | 07:41 PM
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xxtheshockerxx's Avatar
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Default What Spark Plugs do you use?
I was just wondering what the common spark plug is all you fellow LS4 guys use. I won the Bosch Iridium Plugs from the contest on this site and wanted to get other opinions. I think my car still has the stock plugs in it so I am probably due.

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Old Aug 12, 2011 | 08:31 PM
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NGK TR6IX Iridiums... which are one heat range cooler than stock plugs.. and gapped to .035 instead of stock 040....
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Old Aug 12, 2011 | 09:01 PM
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Ngk tr55
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Old Aug 12, 2011 | 10:13 PM
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I have some acdelco iridiums.
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Old Aug 12, 2011 | 11:13 PM
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I use bosch platinum ir fusion
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Old Aug 12, 2011 | 11:29 PM
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Originally Posted by Aaron_Provost
I use bosch platinum ir fusion
i think that is what i won but i will have to wait and see what they send for sure.
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Old Aug 12, 2011 | 11:58 PM
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TR55's
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Old Aug 13, 2011 | 09:14 PM
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I just swapped mine to TR60's after my tune, not sure if that was a good choice though because I'm already losing pressure and heat being at this altitude. Probably going back to 55s again to see if there is any difference.
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Old Aug 13, 2011 | 10:08 PM
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Probably won the new iridium ones. IRIDIUM OE FINEWIRE 9602. They are 6.99-2 rebate=4.99 each at amazon. I have the ir fusion 4509 installed atm.

http://boschautoparts.com/VehiclePar...artFinder.aspx
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Old Aug 13, 2011 | 10:13 PM
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I swapped my AC Delco iridiums with NGK TR6IX Iridiums and car's idle feels smoother.
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Old Aug 14, 2011 | 12:26 AM
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Delco's are some pretty good plugs.
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Old Aug 14, 2011 | 03:02 AM
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anyone used those E3 plugs yet? seems like everyone that uses them are pretty happy
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Old Aug 14, 2011 | 07:22 AM
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Originally Posted by xxtheshockerxx
anyone used those E3 plugs yet? seems like everyone that uses them are pretty happy
Aren't they like $25 each lol. Maybe that is the pulstar crap.
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Old Aug 14, 2011 | 10:32 AM
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Im not sure i havent really ever looked into them. i just hear alot on tv about them


edit: they are $6 a plug
Last edited by xxtheshockerxx; Aug 14, 2011 at 10:47 AM.
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Old Aug 14, 2011 | 11:18 AM
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my daughter's 2006 monte carlo ss/v8 ,went over 100,000 on the stock plugs.. why try to fix something that not broke ? rkvette
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Old Aug 14, 2011 | 11:49 AM
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I use E3's they seem to work fine and my tuner did a datalog and he said there were no misfires. Basically just expensive spark plugs. My buddys impala ss with stock tune gained a bit in gas mileage lol
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Old Aug 14, 2011 | 07:30 PM
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Originally Posted by SigmaX6
I use E3's they seem to work fine and my tuner did a datalog and he said there were no misfires. Basically just expensive spark plugs. My buddys impala ss with stock tune gained a bit in gas mileage lol
the thing i like about the E3's is the rounded thread to prevent seizing. The previous owner of my dads truck put Bosch plugs in it and they all seized up and it took him 4 weeks (working on them on the weekends) to get them out. So thats the only worry i have about Bosch plugs
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Old Jan 9, 2014 | 10:53 AM
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Originally Posted by DavidGXP
TR55's

Do we gap the 55's to .035?
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Old Jan 9, 2014 | 11:34 PM
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which ones do the dealers use when we go in for a tune up?
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Old Jan 10, 2014 | 11:32 AM
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Probably ac delco
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