ValveBounce

I'm looking to change the spark plugs on my 2009 S2000. The general concensus seems to be NGK plugs are best for our cars (and OEM of course), and of those that the NGK iridium plugs offer the best performance.

Can anybody please confirm the part number for the specific NGK Iridium plug that is the best upgrade from the original PFR7G-11S that is shown in the manual?

Thank you.

s2konroids

Bkr7eix, simply an iridium tip last longer and theoretically fires further into the combustion chamber thus theoretically more power.

However on a na s2000 and even na tuned it performance increases are negible and not really worth it. They are useful in high boost s2000 applications.