[Potatoskins02]

basic maintanence can make a big difference sometimes, especially with spark plugs. A foul plug can lead to a lot of problems. I myself have platinum 4's and in the beginning the weren't that great. I dynoed my car with them the day after i put them in (dyno deal). The dyno had problems reading the spark (which could have been the new wires i put in also: Aurora) and hp was very low 127. After a few months i returned to dyno it again (another dyno deal) and the dyno was a whole lot better 141hp/144 ft/lbs. So after a while they have been working wonderfully but in the beginning they sucked the big one.

Apparently though, NGK's are choice plugs for Nissans so maybe they would be best to get.