Nissan 370Z Forum - View Single Post - OEM vs GTR Spark plugs for NA 370z w/ ecutek tune

jrb55gh · 04-10-2016, 08:30 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.

04-10-2016, 08:30 PM	#4 (permalink)
jrb55gh Base Member Join Date: Mar 2013 Location: DFW Texas Posts: 149 Drives: '13 370z black 7AT Rep Power: 12	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.