I'm looking for a not-too-expensive muffler that has decent flow and is not too loud.
Any recommendations?
My current setup is a downpipe, sport cat and walker free-flow mufflers. I like the performance, but the exhaust is too loud.

 

Depends on your opinion of loud.

 

check out Rotary Performance exhaust. they have a decent cat back for cheap and I have heard they are compairable to RB in sound.
http://www.rx7.com/store/rx7/RP50.html
http://www.rx7.com/store/rx7/fcexhaust.html near the bottom - $395.00

Ryosuke

 

If you want a nice rotary sound that's bearable, get racing beat's. If you want quiet and mellow, get Borla's

 

Racing Beat mufflers are fairly quiet. A Search will lend alot of information about mufflers. You could also look into Pre-Silencers.

 

a presilencer would help quiet your existing exhaust