Originally Posted by DarkJak

It may not translate to your application fully, but from what I've heard about the Motordyne XYZ pipe, the resonator option is slightly quieter than the HFC option and doesn't add any restriction vs a straight pipe. So removing the resonator and adding an HFC section probably won't make it any quieter than it already is if loudness is your main concern, unless you go for something really high cell count, which would be pretty restrictive.
Another possibility is getting a resonated Y-pipe. Off the top of my head, I know Motordyne and Litespeed both offer them. Motordyne's section can be switched for straight piped or HFC, and Litespeed offers in both SS and Ti.

Originally Posted by SS_Firehawk

Buy a Motordyne Y pipe and get their HFC

Originally Posted by SS_Firehawk

Your OP is retarded then. Reread what you wrote. I shouldn't even help your rude @ss. Buy the Lightspeed resonated Y pipe or again the Motordyne Y pipe, but get the resonator.

For your understanding:
Cat= catalytic converter
HFC= high flow catalytic converter
my original MD Y pipe and HFC recommendation= 3" 200 cell high flow cat.

a cat and HFC do the same exact thing, but one flows better than the other.