Mainfolds with ORY or high flows??
I had this problem with my old V6 Camaro (only 1 cat). I was young and dumb and got ripped off at an exhaust shop which replaced the cat. Turned out it wasn't the cat, but the O2 sensor rattling in the bung or something. I got rid of the car before I threw more money at it, but the reason I say this is there is a slight chance that it is not the cat that is rattling.
Last edited by z-maro; Feb 1, 2013 at 11:31 AM.
I had this problem with my old V6 Camaro (only 1 cat). I was young and dumb and got ripped off at an exhaust shop which replaced the cat. Turned out it wasn't the cat, but the O2 sensor rattling in the bung or something. I got rid of the car before I threw more money at it, but the reason I say this is there is a slight chance that it is not the cat that is rattling.
My point though is, don't "waste" your money on an ORY. Gut your factory cats and reinstall. Saves you $200+ and any frustration of the ORY not lining up perfectly, plus the car would still pass a visual inspection if ever needed and if you had to sell the car to pay for college it would look stock still.
Just trying to help you save some cash as I am also a poor college student.
The Best V8 Stories One Small Block at Time
LM1 with stock y pipe cat delete with tips.
LM2 with stock y pipe cat delete dumped.





