Bad 02's?
 

O.K here is the problem, the car is not throwing any codes and drives fine around town. But under WOT it bucks bad. I thought I was just spinning and hooking on the street but I took it to the track and the first pass I was down 10mph. Fuel and oil pressure is consistent and everthing looked good. So I made one more pass, which was .3 faster and 2mph faster. These are the original 02's from 99 in the car. I was thinking that they are fouled out and that after I did a WOT blast to clean them out some that is why the car went faster. Also I am running leaded racing fuel. Opinions?

I'd say that's your problem right there. :judge:

Why are you running leaded racing fuel? What is your setup? If it's what's in your sig, why are you running racing fuel for a heads/cam car?

More timing, it has slightly higher compression 11.8-1 and it's .60 a gallon cheaper than 100oct unleaded.