What spark plugs work best?
#1
#2
Colder plugs are usually only made for more modified cars, if you have cams, or FI. there are other reason why you should get them, but that is the basic use; to prevent detonation. Id recommend Iridium NGK's as they always have good reviews and always make good spark. If you want longer life go with platinum, you wont have to change them for about 100,000 miles.
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Sir Robert (01-11-2015)
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Colder plugs are usually only made for more modified cars, if you have cams, or FI. there are other reason why you should get them, but that is the basic use; to prevent detonation. Id recommend Iridium NGK's as they always have good reviews and always make good spark. If you want longer life go with platinum, you wont have to change them for about 100,000 miles.
Iridiums are great!
#8
#9
I think you got that backwards...
Platinum will last longer but Iridium is more conductive.
Copper is the most conductive but has the shortest life as well - about 30K miles.
If you live in a hotter climate you can also swap to 1-step colder plugs if you want. Not a bad idea if you have done a lot of mods and are in Phoenix or Vegas or other similarly hot climates.
Platinum will last longer but Iridium is more conductive.
Copper is the most conductive but has the shortest life as well - about 30K miles.
If you live in a hotter climate you can also swap to 1-step colder plugs if you want. Not a bad idea if you have done a lot of mods and are in Phoenix or Vegas or other similarly hot climates.
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Shmegma_G35 (05-16-2023)
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Dude... use stock plugs if your VQ is stock. It was engineered to work with them. Only thing I would do differently if I was you, is change them after 50-60K instead of 100K. Getting power gains from just spark plugs on a stock motor is wishful thinking. Don't waste your money man.
Gary
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G35 sedan w/ too much money in mods