well, i can tell ya this. wide open on my wide band reads 12.5-12.6. very safe there. Thats way more accurate than reading the plug. Plugs are just too hard to read.
It may be fine at WOT but that thing is pig rich at a cruise and I'm not going to say you are correct at WOT until you kill it clean and cut the plug apart.
I don't care what the A/F meter says that thing is pig rich at idle and cruise. Do I need to post a picture of what a decent tune up looks like? I trust my ability to read a plug long before I trust that gauge. That's for damn sure.
It's PIG rich.
