But yes, having a cat really only helps you if you have to pass a sniffer test (and obviously it helps with not throwing secondary o2 codes).
Good luck to you and let this be a cautionary tale for anyone else living in an emissions area. Consider these issues in advance, rather than waiting until the last minute!
2013 RR Si Sedan - Modified RSX/8th gen CT-E supercharger and 2.25" IMT aftercooler
Now, I do agree that first startup, I would be watching with flashpro and a laptop. lol.... I'm paranoid about my Si! Love the thing way too damn much.
K24Z7 CREW # 61719 (2012 Taffy Si Coupe)
CTE supercharger w/3.6", stock belt
DW 750CC injectors w/PNP clips.
Vit Tuned with Flashpro
Ceramic coated RV6 catted DP
Hasport 62A RMM and Upper mount
Enkei RPF1's 17x9 + 45 (3mm front spacers)
Continental Extreme Contact Sport Summer tires 245/40-17
Hybrid Racing shifter and cable bushings
Buddy Club Sport Spec Coilovers
14' OEM 20mm Rear Sway Bar
Ultra Racing 3 point Trunk Brace
FKX Racing Rear Strut bar