This is a warm start of my 2005 Cobalt SS. Running full 3" Exhaust. Yes, it is catless. Magnaflow muffler and resonator. ZZP downpipe. Cobalt Addiction header. SUBSCRIBE! MY CHANNEL!
Sounds nice man! I have a ss/sc as well.. i have a magnaflow muffler with no resonator and 2.5" piping. How do you think a catless downpipe would sound on this setup?