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Old 09-09-2014, 09:58 PM   #1
MattsZL1
 
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Spark Plug ? ZL1 575 rwhp

I have been looking all over the forum about which spark plug to run.

I am trying to find out what would be a good one to run for my setup.

Car is 2013 ZL1 Auto at this time I am making 575 rwhp and 570 ft tq. which if I under stand correctly on the drive train loss I should be right around 700hp at the crank

I have a few more mods coming in the next month that should put me over the 600 + rwhp.

Right now I am on the stock plugs.

Just trying to see what the other ZL1 guys are using.

Thanks for the HELP!
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Old 09-09-2014, 09:59 PM   #2
sportyb24
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I have stock and I'm at 700rwhp
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Old 09-09-2014, 10:20 PM   #3
ZO6 Bryan

 
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NGK TR7IX
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Old 09-10-2014, 12:09 AM   #4
EvilZL1
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What would it do


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Old 09-10-2014, 06:43 AM   #5
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Call Lingenfelter
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Old 09-10-2014, 06:53 AM   #6
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Quote:
Originally Posted by ZO6 Bryan View Post
NGK TR7IX

This is correct.
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Old 09-10-2014, 07:28 AM   #7
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Quote:
Originally Posted by ZO6 Bryan View Post
NGK TR7IX
At what GAP are they set?
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Old 09-10-2014, 08:15 AM   #8
ZO6 Bryan

 
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Quote:
Originally Posted by tnspd View Post
At what GAP are they set?
.040"
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Old 09-10-2014, 08:58 AM   #9
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I see some are using the tr7ix and some use the tr6. What is the difference I know one is a step colder but how do you know which one to use for you application?
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Old 09-10-2014, 06:42 PM   #10
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NGK TR6 here 580rwhp 571rwtq and MSD plug wires to compliment!!!
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Old 09-10-2014, 08:09 PM   #11
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NGK TR6 is the same heat range as stock but is a cheaper plug than the Iridium TR7IX. And the 7 is colder if you are running increased boost. The OEM calls for Iridium in the cars.
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Old 09-10-2014, 08:15 PM   #12
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http://www.pcmofnc.com/index.php/blo...ere-do-i-start
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Old 09-10-2014, 08:29 PM   #13
MaxxMuscle
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Sould u also change the plug wires if u go with the Iridium TR7IX ?
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Old 09-10-2014, 08:35 PM   #14
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I've used tr7ix .We also tried autolite ar103 with good result .


'13 A6 ZL1 . JLT cold air , SW 2" longtube catted, LS3 TB, 2.55 upper+ ati balancer w 10% lower . LPE cam, ID 850, msd boost a pump . Fabco HX . Best et to date 10.86 @126mph .
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