Catalytic Converter Bypass

[Tierhog]

Forgive the ignorance, I thought the cat was IN the muffler in the first portion after the 90. Isn't the muffler the same for RS/RT? I thought ecu adaptation was a wives tale promoted by a hindle break in procedure? Learning here guys, don't flame me.

Oh and the RS has a 80db EPA stamp on the inner portion by bike frame. My HMF is 95 db at idle, over 105 at rev.