Recently replaced the 2nd catalytic converter and stock resonator with a 12" Vibrant muffler. Cold starts are a little more mellow now, but once the exhaust warms up the volume increases.
Car has the following modifications:
SXTH Element 3.5" Intake
SXTH Element Intercooler Resonator Delete
SXTH Element Single Oil Catch Can (PCV)
SXTH Element Aluminum Shifter Bushings (cable & base)
B&M Short Shifter
Custom 2.5" exhaust with 2nd cat delete
Vibrant 12" Muffler & 12" Bottle Resonator
845 Motorsports Electronic Boost Control Solenoid
Pierce Motorsports 2-point lower tie bar
SXTH Element 22mm rear sway bar
KDM Tuners Stainless Brake and Clutch lines
Yellowspeed Racing Coilovers (Shock Settings: 20/18)
XXR 527 18x8 +45 (custom offset)
Firestone Firehawk Indy 500 235/40/18