They all do QD it's the gauze/mesh just inside the opening.
Exactly....it;s a ceramic lump that supposedly comes out with a hammer and chisel
Also ask a local exhaust specialist about making a switchable main cat/decat pipe...
Hopefully get a quote in a day or two.
This is next stage ona slippery slope.....Map is running great, MPG is great.....just need to track down the loss of power in 4th...only happens in 4th and happened 3 times in 4 weeks...........intermittent issues are a pain in the ass....