two mufflers?

[txhd]

what is the difference between getting a cat back system di/do and two mufflers si/so instead? any difference?

[N2BOOST]

If you have magnaflow race series will be much louderbut you should still get the x pipe to balance the exhaust which magnaflow does internally on their single muffler but it is kinda quiet for me. Catback system you can install much easier than dual mufflers would probably be a job for a exhaust shop.