OEM vs GTR Spark plugs for NA 370z w/ ecutek tune

Patrickz34 · 04-09-2016, 03:05 AM

Hey guys, do you recommend using GTR spark plugs on my Z? I recently got tuned and was told by the tuner to go with GTR plugs instead of OEM, can any of you shed some light?

VSS370z · 04-09-2016, 09:24 AM

If you are N/A then no. GTR spark plugs are one step colder than those on the Z and you don't want to do that unless you go turbo/supercharger.

Patrickz34 · 04-10-2016, 06:11 PM

Hmm wonder why my tuner told me to do so. I was under the same impression as well.

jrb55gh · 04-10-2016, 07:30 PM

Aftermarket tunes are usually leaner than the stock tune. That increases combustion temperatures and that may warrant going to a colder spark plug heat range.

VSS370z · 04-10-2016, 08:00 PM

Maybe but i hardly have seen anyone here recommending you changing to colder spark plugs with just a few mods and tune. Only the turbo and supercharged guys go with colder plugs.

04-09-2016, 03:05 AM	#1 (permalink)
Patrickz34 Base Member Join Date: May 2014 Location: Riverside, California Posts: 222 Drives: 09' 370z Touring 6MT Rep Power: 12	OEM vs GTR Spark plugs for NA 370z w/ ecutek tune Hey guys, do you recommend using GTR spark plugs on my Z? I recently got tuned and was told by the tuner to go with GTR plugs instead of OEM, can any of you shed some light? __________________ Motordyne E370, Berk HFC, Stillen G3, SPC Camber arms Ecutek Tune by Sebastian @ SpecialtyZ, Z1 34 Row Swift springs, Morimoto RGB Halos, Vordoven Forme 9

04-10-2016, 06:11 PM	#3 (permalink)
Patrickz34 Base Member Join Date: May 2014 Location: Riverside, California Posts: 222 Drives: 09' 370z Touring 6MT Rep Power: 12	Hmm wonder why my tuner told me to do so. I was under the same impression as well. __________________ Motordyne E370, Berk HFC, Stillen G3, SPC Camber arms Ecutek Tune by Sebastian @ SpecialtyZ, Z1 34 Row Swift springs, Morimoto RGB Halos, Vordoven Forme 9

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04-09-2016, 09:24 AM	#2 (permalink)
VSS370z Enthusiast Member Join Date: Apr 2012 Location: Puerto Rico Posts: 380 Drives: 09 Nissan 370z CY M6 Rep Power: 14	If you are N/A then no. GTR spark plugs are one step colder than those on the Z and you don't want to do that unless you go turbo/supercharger.

04-10-2016, 07:30 PM	#4 (permalink)
jrb55gh Base Member Join Date: Mar 2013 Location: DFW Texas Posts: 149 Drives: '13 370z black 7AT Rep Power: 13	Aftermarket tunes are usually leaner than the stock tune. That increases combustion temperatures and that may warrant going to a colder spark plug heat range.

04-10-2016, 08:00 PM	#5 (permalink)
VSS370z Enthusiast Member Join Date: Apr 2012 Location: Puerto Rico Posts: 380 Drives: 09 Nissan 370z CY M6 Rep Power: 14	Maybe but i hardly have seen anyone here recommending you changing to colder spark plugs with just a few mods and tune. Only the turbo and supercharged guys go with colder plugs.