Depends. How do they test emissions in CT?
http://www.ehow.com/list_7618220_requirements-passing-ct-emissions.html
from what I have gathered, just a gap cap test and emissions..at least 1 cat is required. p5s have 2 though I'm pretty sure and a magnaflow catback replaces 1, and headers would not call for removal f tenkther so i think I would still have both