I bought some of these for my 00 civic and the site where I ordered them from said they were preset. I read somewhere though while surfing the net that the reason they dont want you to gap them is that you may break the iridium tip. Would you leave them as is or try to gap them to your cars specification? Will it make a difference? Thanks.

 

Were they specifically for your year of Civic? If so, I'd just check them and leave em at what they are, unless one is way out.