wtdash Posted February 7, 2011 Share Posted February 7, 2011 (edited) This was on my '90 Legacy Turbo (swap). I have a 'universal' CC, 3" In/Out, I bought online 2 years ago. It's directly behind a 3" bellmouth downpipe. When I pulled off my exhaust I heard some rattling. The below 'briquets' came out.....Uh, WTH? Any input is appreciated. Here's look inside to the back of the CC: Magnaflow Hi-flow Cat (94139) Pic: Thanks, Td Edited February 7, 2011 by wtdash Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted February 7, 2011 Share Posted February 7, 2011 Yep - cat's broke. That can happen with vibration or just from age - the "honeycomb" is very brittle. A good smack will crack it easily. GD Quote Link to comment Share on other sites More sharing options...
WoodsWagon Posted February 7, 2011 Share Posted February 7, 2011 The rest of those chunks are stuck in the muffler, give it a shake too. Impact or backfiring in the exhaust can do that too. Reminds me that I need to take the cats out of my truck and shake the pieces out, it retarded the timing to TDC when it set a knock sensor code. I was illegally towing a forester home so I just held it to the boards and kept going. The cat got torched. Quote Link to comment Share on other sites More sharing options...
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