whosniffedme

For the longest time (since I've had my car), after I haul *** for an extended time I hear a noise coming from the rear driver side of my car. At first I thought it might be an LCA, then I thought it could be a bracket, but now I'm almost 100% positive it's coming from my left Flowmaster 40.

The noise only happens after the exhaust gets really really hot. After I deleted my cats, it started doing it worse but after I put resonators on it started doing it less. The reason I deleted my cats was because the stock ones blew out , and the honeycomb stuff was blasting out my pipes. A little bit is still in there, maybe that's what's rattling in there?

I figured this out after driving it around the track a few times and realizing that I could hear it even from a dead stop if it was hot enough. Any ideas on what the problem could be?

Optimus485

Could be one of the welds inside one of the chambers is lose, and only rattling when it gets hot and expands.