I have to service my bike every 4 weeks due to the amount of miles I do for commuting. This past weekend I changed the spark plugs, but instead of using the regular NGK CR8E plugs I used the iridium version: CR8EIX. I do admit that I'm long overdue changing the plugs, probably 7k miles, there's a boring explanation for that. Anyway, reason I'm posting is to ask if anyone else noticed an significant difference by changing from normal to iridium plugs. The bike is pulling so much better, it's rev happy again and it feels and sounds better. It is not my imagination, I did think it was when I went out on it yesterday after changing the plugs, but after the trip to work this morning (85.5 miles) I had enough time on it to be sure. It could simply be that the old plugs were done for, but I'm not so sure.
So, anyone seen/felt/heard a big difference changing to iridium plugs?