bdydrp97s10
+1y
yes, its your cat, samething happened with mine, it beat the shit out of the inside of it.. yes it will throw a check engine light because the O2 sensor will detect the engine running rich. as far as the bolts go to the hardware store and get some new ones, just make sure to put them in once then after the engine heats up re torque them because the heat will loosen them.