Ngk 11S plugs..

 

colour looks pretty normal. Looks like a bit of carbon on the insulator tops of the ceramic, might try some dielectric grease on the inside of the coilpack boots. Those plugs don't owe you anything, looks like a good time to get them out.

 

Cool..I did grease the boots. Fwiw, I put in denso iridiums.

 

new plugs are nice, it should run a bit better.

 

i will never use any plugs other than NGKs... Theres too much gimmicky plugs out there, never sure whats good so I'll stick with what I know works awesome.

 

Car seems to be more rev happy. Densos seems to be working well. Also, the car has around 58k miles and it seems like the plugs haven't been previously replaced.

 

my original plugs came out at 55k, the center electrodes were badly worn, can't imagine what they would have looked like at 100,000 miles. I highly recommend people changing them earlier than what the manual calls for.