My SCT BA2400 maf was pegging for some weird reason so I had to modify the inlet to the sensor. Now I have it peaking around 4.4v with my 15 psi boost setup. That should leave me plenty of room to go to 20 psi of boost.
My last datalog on 2/3/07 was showing that I've made progress in getting my fuel curve flatter. It's just a bit lean right now. It was 0 degrees F that day so that may have something to do with it.