Seems like there may be something wrong with your car.
I have a client with a bug eye w/ 16G and on E85 he makes 370hp (dynojet). 370hp should trap about 116 -/+ 1. Your car is trapping only 102. Thats what a stock STI traps.
You should be making at least 330-350hp and should be trapping 110+, regardless of ET.