Well i posted this in the forced induction but no response, i'll try here.
I was recently tuned on 8psi b18c JRSC
but i went back to 6psi, basemap this time, from xenocron.
My a/r under wot is between 12.5-12.9 never goes up past 12.9 under boost.
I've searched and searched, some say run 11.5-12.5, others say anything from 11.1-13.5 , i've seen where people say since i'm not running big boost where i'm about is safe, others might think i'm to lean, but my plugs would show that i'm leaning out. vid of my sparkplugs, feeback would be great.
JRSC+spark+plugs+after+few+pulls

 

12.5:1 - 12.9:1 is too lean period. That is an average air:fuel. One cylinder may be 13:1 or similar. Especially being you probably are not intercooled. Need to get the mixture richer or you're going to have problems

 

Listen to the man.

 

I also have to agree. It needs richened up a bit, especially if the car is not intercooled.

 

You can't determine a/f condition under load by looking at that picture of the plugs. A/F condition under load is determined by looking along the porcelain and at the base of the porcelain, not at the tip. The tip of the plug is more indicative of idle condition and low load modes. Additionally, upon completion of the pull, your car needs immediately shut off in order to view the last combustion events effect on the plugs. Doing pulls then taking them out won't tell you much beyond evidence of past detonation and the effectiveness of the heat range of the plug.

Your setup is certainly too lean, and your asking for trouble for sure. Basemaps aren't meant to be driven on in boost, just to get you to the tuner.

 

11.5-11.8 are my guidelines

 

just a thought, why not goto a dyno and tune with a richer a/f, granted 12.5ish is too lean, but let the dyno show your power with a safe tune. aim for 11.6 to 11.8 especially with a non intercooled supercharger setup.

 

Also get some ngk-4554's

 

video of a 5th gear wot pull, any info would be great. seems fine till vtec engages.
please read the video description box for more details.
tuning+with+wideband%2f+5th+gear+wot+pull

 

yea thats pretty lean for fi. add some more fuel.