Kooks 2", no cats, Flowmaster Outlaw NPP.
I got on it alittle at the end...
With the NPP, the programming adjusts the valves to help eliminate any drone or rasp. Mine has a 2 sec rasp at 1600rpm and the valves adjust it out.
You DO NOT want to pull the fuse with this setup...it is RAW, even for me!
In Stealth mode it is docile.
https://youtu.be/zAbIx33_CzY