09-30-2015, 09:03 AM | #1 |
Drives: 2015 ZL1 Coupe A6 & 2002 ZO6 Join Date: Apr 2014
Location: Pittsburgh, PA
Posts: 246
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Spark Plugs Choice
What plugs are you guys running? Is there one better than the other? I'm still running the stock plugs now, even with my mods.
Thanks
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2015 ZL1 A6 Coupe Crystal Red
ATI Balancer w/9.55 (22.5%) lower pulley, FIC1000 Injectors, Stainless Works 2" headers, Stainless Works Retro Cat-Back, V-Max Ported TB, Roto-Fab w/Big Gulp, Elite 2nd Gen Catch Can, Jannetty Tuned. 581 rwhp |
09-30-2015, 09:59 AM | #2 |
Drives: BLUE CAMARO ZL1 1LE M6 Join Date: Jun 2009
Location: ON THE DYNO WATERBURY CT.
Posts: 15,230
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NGK TR7IX gap 0.042
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Celebrating 37 years Performance parts, Installation, Fabrication, Dyno tuning, Remote custom tuning, and alignments. 203-753-7223 Waterbury CT. 06705 email tedj@jannettyracing.com |
09-30-2015, 03:28 PM | #3 |
Drives: 2015 ZL1 Coupe A6 & 2002 ZO6 Join Date: Apr 2014
Location: Pittsburgh, PA
Posts: 246
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2015 ZL1 A6 Coupe Crystal Red
ATI Balancer w/9.55 (22.5%) lower pulley, FIC1000 Injectors, Stainless Works 2" headers, Stainless Works Retro Cat-Back, V-Max Ported TB, Roto-Fab w/Big Gulp, Elite 2nd Gen Catch Can, Jannetty Tuned. 581 rwhp |
09-30-2015, 03:50 PM | #4 |
Drives: 02 Z06, 95 Trans Am, 2012 ZL1 Join Date: Mar 2012
Location: Southeast
Posts: 1,838
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None unless you have upped your boost. The higher an engines compression ratio the colder of a plug you will need. Increasing boost is the same as increasing the compression ratio.
Good read. http://www.pcmofnc.com/index.php/blo...ere-do-i-start
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Bryan 2018 ZL1 M6
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10-11-2015, 11:28 PM | #5 | |
Drives: 2015 ZL1 Coupe A6 & 2002 ZO6 Join Date: Apr 2014
Location: Pittsburgh, PA
Posts: 246
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Quote:
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2015 ZL1 A6 Coupe Crystal Red
ATI Balancer w/9.55 (22.5%) lower pulley, FIC1000 Injectors, Stainless Works 2" headers, Stainless Works Retro Cat-Back, V-Max Ported TB, Roto-Fab w/Big Gulp, Elite 2nd Gen Catch Can, Jannetty Tuned. 581 rwhp |
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10-12-2015, 12:32 AM | #6 | |
Go fast, please.
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Quote:
That calculation seems to be a little off... Basically says stock should be heat range 7. From what NGK shows stock is heat range 6. I currently have one step colder plugs from NGK (range 7) and by that websites calculations says I should be using a range 8. I guess it is a good place to start, but just like he says in the text it isn't the bible. |
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10-12-2015, 10:43 AM | #7 |
Drives: 2013 ZL1 Join Date: Jan 2015
Location: Orlando
Posts: 936
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Pretty much anyone with over stock boost is good with a 7 heat range. Gapping the plugs down to around .030 helps many cars with blow out issues including mine.
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2013 A6 ZL1
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10-13-2015, 07:53 AM | #8 |
Drives: 2015 ZL1 Coupe A6 & 2002 ZO6 Join Date: Apr 2014
Location: Pittsburgh, PA
Posts: 246
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Ted, Would this affect my tune by changing from the stock plugs to TR7IX?
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2015 ZL1 A6 Coupe Crystal Red
ATI Balancer w/9.55 (22.5%) lower pulley, FIC1000 Injectors, Stainless Works 2" headers, Stainless Works Retro Cat-Back, V-Max Ported TB, Roto-Fab w/Big Gulp, Elite 2nd Gen Catch Can, Jannetty Tuned. 581 rwhp |
10-14-2015, 11:22 AM | #9 | |||
Drives: BLUE CAMARO ZL1 1LE M6 Join Date: Jun 2009
Location: ON THE DYNO WATERBURY CT.
Posts: 15,230
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Quote:
Quote:
We can run gap of 0.042 at over 850 RWHP. Quote:
Ted.
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www.jannettyracing.com
Celebrating 37 years Performance parts, Installation, Fabrication, Dyno tuning, Remote custom tuning, and alignments. 203-753-7223 Waterbury CT. 06705 email tedj@jannettyracing.com |
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10-14-2015, 12:20 PM | #10 |
Drives: 2015 ZL1 Blue Velvet Metallic Join Date: Mar 2015
Location: Melbourne, FL
Posts: 720
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Ted,
At what point, if any, is there a need/benefit to add upgraded electrical for the plugs, i.e. coils and wires? Any reason to upgrade to MSD or Granatelli parts? Thanks
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Roto-Fab CAI, ARH LT, SW 3" catback, JRE tune, Elite-2 CC, VMAX TB, Big Gulp, WW II relo, Lingenfelter S/C reservoir
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10-14-2015, 08:30 PM | #11 |
Go fast, please.
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10-15-2015, 04:52 AM | #12 |
Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,815
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MSD coils are junk and many tuners have issues with them. Stock GM is more than adequate so leave them stock.
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
10-15-2015, 09:12 AM | #13 |
Drives: 2013 ZL1 Join Date: Jan 2015
Location: Orlando
Posts: 936
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I would say unless you are running crazy high boost levels and using exotic fuels the stock coils are just fine. The stock ones easily handle 18-19 pounds of boost on e85 or pump.
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2013 A6 ZL1
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10-15-2015, 09:35 AM | #14 | ||
Drives: BLUE CAMARO ZL1 1LE M6 Join Date: Jun 2009
Location: ON THE DYNO WATERBURY CT.
Posts: 15,230
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Quote:
Stock coils draw less than aftermarket coils. Therefore installing aftermarket coils often overwhelms the voltage feed to the coils. Many of the cars that have come through my shop with high power and spark blow out is easily fixed with a Wire upgrade to feed the coils now offered in a kit from MSD. http://www.summitracing.com/parts/msd-88867 To take it a step farther we install JMS Ignition voltage booster to feed the coils and we can run large gaps at high boost and make more power. http://www.jmschip.com/sparkmax-igni...ltage-booster/ Quote:
I upgrade the wires when we add headers. Ted.
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www.jannettyracing.com
Celebrating 37 years Performance parts, Installation, Fabrication, Dyno tuning, Remote custom tuning, and alignments. 203-753-7223 Waterbury CT. 06705 email tedj@jannettyracing.com |
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