Quote Originally Posted by Scottydoggs View Post
so you know, #3 is the middle front.

back 2, 4, 6
front 1, 3, 5

flashing cel typically means you need a tune up super bad, or the cats clogged up. but this is at wot for the most part.

3 is also the piston that likes to chip, its a heat sandwich. so if you have not pulled its plug, pull it, see if its smashed. if it is, the piston chipped.
Thanks for that. for some reason i thought #3 was driver's side front.
pulled the plug, tried to post a picture but i got an over quota message..
Anyway, there's no damage aside from obvious melting of the center electrode and a massive gap.. i'd guess well over .080"
Trying to decide on what plugs to go with. I'm hard on the pedal and a fan of iridium for anything like this, as well as likely to do some upgrades in the future..