Yes I have searched and have all information on both exhaust systems. My biggest concern is how much louder is the new MS over the RB catback? I take long trips a couple hours away often and dont want a system that drones too much, but I guess there is always the radio right. I trust your opinions and will probably be happy with either one as I want a better exhaust note. I havent heard any aftermarket catbacks on a rx-8 in person so I have to go off the info on the internet. Any help from you guys is greatly appreciated. Thanks

 

You should have searched more... The RB exhaust is actually the quitest of the aftermarket exhausts.

From what I have heard the MS exhaust is pretty loud and is louder than the RB exhaust.

However, you gain weight with the RB exhaust, but you shave off a few pounds with the MS exhaust.

 

Do a little searching and you will find multiple other threads talking about the ms exhaust. Check out this one:
https://www.rx8club.com/series-i-aftermarket-performance-modifications-23/does-ms-dual-sport-exhaust-drone-85483/

I also had problems choosing between the RB and MS exhaust and I ended up going with the MS exhaust. Most everyone seems to love the RB but it is probably one of the quietest exhausts. The MS exhaust does not drone, but it loud enough to be noticeable. I love how it sounds and I definitely recommend it.

 

do you guys know about the b&b exhausts how they sound/perform compared to the ms exhausts?

 

Dont know anything about the b&b exhaust but I love my MS exhaust. For a long ride, id imagine you wanted the radio on. With it turned up to a decent decibal level and cruise control on, you wont notice your exhaust. Enjoy your trip and be safe.

 

What about with a mid-pipe or hi-flow cat? RB or MS?

 

supercat with rb sounds bliss...

rb is probably a lot more quiet compared with the ms exhaust.

 

I LOVE my MS exhaust ... I usually opt for the radio off so I can hear it =D

 

Do you want a heavy *** exhaust with 4 in tips, or a slightly lighter/louder exhaust with 3.5in tips? You are really just paying for the sound and tip size.

 

ive heard the b and b with midpipe, and its ridiculously loud. I dont remember what it sounds like with stock cat although i think ive heard that too.