Hi Guys. I've done a search and brought this up in a related post but still no joy so thought i would create a thread as there doesn't seem to be a definitive answer. I'm looking at getting some NGK Iridium plugs for my EK9 (Stock B16B). I'm aware that the standard recommended heat range is 7 by Honda. The confusing part... NGK do two plugs that will fit the B16B application: BKR7EIX BKR7EIX-11 The only difference being that the BKR7EIX-11 are pre-gapped to 1.1mm. What is the standard gap? I've been told that the gap on the none '11' plugs will be 1.0mm, so only 0.1mm less. I've seen both '11' and none '11' plugs recommended on this forum so the big question is: Do i need to use the spark plug which is pre-gapped to 1.1mm, or will the standard gap of 1.0mm (if this is the case) be perfectly fine to run with no detremental effects? Any help here would be greatly appreciated, i'm about to do a full service and want to make sure i'm getting the right bits.