Just sharing. After inspecting and torqueing everything else, and thinking how stupid it is to do it but feeling a little desperate I looked up the tailpipe. What a way to spend a Saturday. It broke the rear O2 on the way out as well. Truck ran fine like this out of boost; boost a different story. Lack of power, stumble, and sounded like the blower had a hole in it. But I am happy because of all the other things I thought of that it turned out not to be.
2010 Avalanche 4WD; AES 390; Mast LS3 heads; VVT Cam; ported TVS2300; Overdrive 8 rib pulleys; 2.7 snout pulley; ID1000; LS3 TB; WB 450; Twin MM cans; built 6L80; CircleD Triple Disk, CSR flexplate; Trucool 40K; Aeroforce Dual; AFX
You don't need a cat anyway.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
Not to be a hole but that is awesome.
Dude you made so much power you blew out the cat
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