Have a look:

AFR by RPMs:

 

Dang I run richer and you run leaner. That would be the diff in timing I think. I didn't get any more kr going from 11.5-11.7 so I'm leaning it out a bit more, but only going to 11.9-12. Is your kr active across the cylinders or limited to one or two? Check your plugs/gap and do a compression test? I have my plugs gaped at .033" and my compression was almost perfect across the cylinders as of last week.

 

I was going to go turbo (as my name suggests), but after thinking about how long I wanted to be driving this car I ultimately decided to SC it. I'll get decent power now and can save the extra $$ I would end up spending on supporting mods for my new STi/Evo/Speed 3.