In the state I live in emissions are strict and I cannot be without a cat.
Also, what do you think caused the clunking?
I live in NY and my car always passed with flying colors with a bunch of emissions equipment missing, NIC cam and the codes tuned out.
Cry havoc and let slip the dogs of war.
2004 Saab 9-5 Aero - WAHSAABI - Way too much power/Koni FSD & Hirsch Springs/Big Sways - DD/AutoX'r
2007 Ford F-150 Lariat - 5.4L V8 - Bill secretly likes it
2015 Mitsubishi Outlander Sport SE - Wifey Mobile