I have recently added a BAT intake, new plugs and 9mm wires, Unorthodox Racing pulley, MSDS headers, SHO Shop off-road Y-pipe, and Bosal cat back to my 2000SVT. I took it to dyno today, and only pulled a 168.1. What is wrong? Any suggestions appreciated.

2000 CSVT Black intake, pulley, headers, y-pipe, cat back, custom dyno-tuned chip