Can someone tell me the nissan part # for stock NGK plat plugs? and also what should they be gapped at for the z ?

Thanks

 

Bump. And whats the stock GAP for N/A.

Iridium or NGK plat?

 

Plugs from ESM

NGK Platinum

Standard: PLFR5A-11
Hot: PLFR4A-11
Cold: PLFR6A-11

Gap: 1.1mm (0.043 in.)

 

Stock gap .043
standard plug plfr5a-11
hot plfr4a-11
cold plfr6a-11

 

Cool your in FL?? Hot or Cold? I'm NA would I need to use any of those or just stick with standard?

Thanks.

 

Stay with standard. No real need to run a cooler plug. Then again, if you get detonation in the future, then a colder plug would be good. However, some seriously believe in colder plugs even on a mostly stock car.

 

Get Iridium no matter what brand. Gap at .044. I prefer Denso Iridium.

In theory, a colder plug would allow our "intelligent" ECU to keep the timing more advanced. Our ECU takes many engine measurements and likes to retard timing and richen a:f.

 

Thanks,

Ordered Denso Iridium IKH16.

Would I have to reset the ECU after i swap them??

 

Just a note , be "very" gentle when handling the Iridium plugs, the ceramic around the finer wire tip is very fragile and can easily crack if dropped etc. But they are definately about the best performing plugs you can buy both NA or FI.