Tw1in Sp1n

tune. they show bkr7e on their website with their stage 3 kit but ive always heard oem is best. I had problems with my denso iridiums and misfires, dont want to make that mistake again

complacentsee

The copper plugs give a better spark than the platium and iridium plugs. They just don't last very long in our engines. I've read that some people change them at every oil change. But they are also only a couple bucks a plug.

TheSkinFox

i'm stage 2+ and i change copper plugs every other oil change or every 10k miles (i do 5k oil change intervals)

sim's4

Just a quick question guys.
Do you have a brand and/or model of those cup spark plugs?
I really don't mind to change them very sooner.