Inside r230 back box exhaust

[SL350_SWINDON]

inside of standard r230 sl exhaust back box for those who are interested.
I'm planning to keep all the same but join the inlet and outlet with perforated pipe.
Any useful feedback is welcomed

 

[Borys]

It will sound mean
Remember sound video is a must

 

[SL350_SWINDON]

I'm not 100% convinced how it will sound/perform to be honest. It's going to be trial and error. If this is not good I'll try another approach.