Hi all,

Im after abit of advice from people running superchargers as to whether or not i should be concerned about my spark plugs.

10k NA miles
3K 11psi HKS supercharged miles

Current tune uses conservative timing and AFR of 11.7 when in boost and when cruising i have it mapped to about 14.5. I have no real knock ever register during driving

I also have water injection which operates from 2 psi through to full output at 11 psi.

I'm using the standard spark plugs as i have not encountered any issue with them during running so far.








Reading the following guide



I would say im near normal wear based on what im seeing but its more a grey colour than tan.

Im pretty happy that everything is running well and i have nothing to worry about but its always worth a second opinion. I cant find much information on what effect if any water injection would have to the spark plugs but i know its supposed to have a steam cleaning effect so maybe that would make a large difference to the appearance of the spark plugs.

Thanks in advance for any help you guys can provide!

 

Good info here...
https://www.s2ki.com/s2000/topic/115...#entry24049173