I'm looking to upgrade my Sedan's Exhaust looking for a system that doesnt sound too loud and provides good clearance for the rear muffler/tip. Any suggestions on where i can look and hear the sounds? Besides the exhaust, what else can i do to increase horespower with minor modifications? Thanks.

 

HKS rear section muffler. You won't really gain anything but it's the only one that isn't too loud.

You can also replace the midpipe with a couple midpipe.

 

Thanks, any suggestions on the midpipe?