then to hear my car doesnt have any then to not needing to EVER replace them... come on now... !!! I have no problem doing this myself except for... um... it looking like a major PITA.. hahaaa Not to mention possibly needing a new injector.. now there's NO way Im going to have Nissan do that... but me... dont know about tackling that job.... CT sux in terms of getting things done RIGHT on the Z, thats for sure