Indexing spark plugs?

[Mikey N.C.]

Optimax, is it necessary some say so, so say you don't have to?

 

[Docksidemarineservices]

Not necessary. It is not an e-tec.

 

[fastjeff]

Not needed with gapless pugs, obviously. Is that what you're running?

Jeff

 

[Mikey N.C.]

No uses IZFR5G