Don't take this the wrong way, but you need to save your $200 and use it to get to the track a few more times. That 2.3 60' says you were either spinning or bogging. Get that 60' down to a 2.0- 2.1 and you will see mid-low 14s.
Running a good ET takes practice, plain and simple. Trust me, if you simply keep going back every chance you get, you will knock off considerable ET with each trip.
2006 GTO, 6-speed
JBA Mid-pipe/Pypes X-box
373 RWHP/373 RWTQ
12.91@111 MPH 2.1 60'