Normal
bkr7es bro...:wavey:but usually i use yamaha RXZ plug bp8es at my friend car..u need to find the nipple that bolted at top of the spark plug bcoz that plug didn't come with that nipple...u can find that nipple from the old plug at the workshop..don't worry about the performance bcoz i've dyno many of my friend car at GT auto and have no problem at all(thomas will always smile when he ask if i've change the plug or not before dyno and when i say yes and told him it's was from RXZ)hahaha