Mine went at 13,000 miles with no sign of a problem till then - good luck.
haha yeah I know some people havnt had problems for 000's of miles then it just goes wrong.
Lucifer, why must you have the bkr plugs if your mapped? I have seats plugs and thus far its been alright. Will I notice any real difference in the car with newer plugs. Or will it just be that when/if an error comes up it will be later with the new plugs