Mark300zx Active Member Apr 24, 2008 1,454 8 Surrey/SW London Sep 3, 2010 #21 Weird changing from stock NGK platinums to NGK iridium 7s gave me a noticeable difference in performance and MPG, car boosted past 5000rpm as well!
Weird changing from stock NGK platinums to NGK iridium 7s gave me a noticeable difference in performance and MPG, car boosted past 5000rpm as well!
