Does anyone have anything different then the stock ngk? If so, have you noticed any performance diferance? I am looking at the Iridium NGK for a replacement plug but Is this just their way of charging more money for the same plug with a different name on it?

Any info will help.

Also does anyone know the stock ngk # for the p650?

 

Come on guys! I need to order these up. If this is a dumb question and the exra money on the Iridium or split fire won't make a lick of difference than tell me.

Thanks again

 

It's not a dumb question, but my opinion would be that you would tell no difference in performance.

 

You will find more gains by opening the gap a little with the stock style plugs.Give it another .010" as long as your not runniing lean as a lean mix is harder to fire.Im not sure how strong the stock ign is on our machines,but .010" shouldnt be too much to ask.

 

It would be a waste of money in my opinion. Just stick with the regular NGKs.

Andy