does a 2012 civic si muffler fit on a 98 ek coupe and how does it sound?

 

9th gen si are 2.5" and 6th gen's (98's) are 2"
a muffler shop could weld it to make it work...is it direct fit? no

it would sound...not much different. It is higher flow, but you'd still be running 2" stock back to it.

 

is it even worth it then?

 

really??? screw getting an aftermarket axleback then!

it depends on what you're looking for.
when it comes to sound, it will sound stock. if you want it to sound to agressive it's not for you. but 2.5" is usually all you need unless you're doing major work like boost

 

im lookin for like a nice sound not loud and annoying

 

apexi ws2
yonaka ws2
greedy evo 2
twinloop
ect.....

Any strait thru chambered muffler will sound better than stock around town but still quiet, but then sounds nice and mean under wot. I personally have the yonaka ws2 and love it