My manual says to replace the spark plugs at 30K...i am at 31K....is it time? 30K sounds way early to be doing that already.

I plan on replacing mine every year. You get a lot of performance back when you change your plugs. I've seen multiple dyno's of around 4hp gains on Honda's when changing spark plugs.... not bad for a cheap investment.

get some NGK plugs...from Honda

NGK Iridium = Denso Iridium = Spoon Iridium

Originally posted by Si2000 Vtec
NGK Iridium = Denso Iridium = Spoon Iridium

don't forget A'pexi Iridium, HKS Iridium, and GReddy Iridium

just replace them with oem ones or iridium plugs if ya want. i just changed mine when i past 30k and it was good!! the car ran much smoother.