Copper plugs produce the best spark, and also happen to be the cheapest. For a stock ignition system, generic copper plugs will work fine for a LONG time.

This reminds me, I have to change my plugs. F'n Rotary engines chew threw spark plugs in about 7-10k miles on our stock ignition. :mad:

Was that a typo Tobra? 10k miles for copper plugs? It's an honest question; I don't know much of anything about the ignition/fuel system.

Im most likely retarded but I change mine every 5-7k or every other oil change. They are soo cheap $6 for four from my local parts store. they are DENSO's and I like them a lot, i gap them to .044" for GSR.

Yeah, the copper plugs need to be changed about every other oil change. OEM plugs last much longer, though.

and always, always, always use anti sieze when doing the plugs

OEM NGK's Platinum or the Copper substitutes.

I run BKR6E's.

I just picked up so NGK Iridiums today, and they are pretty nice.