ilovemysi
02-26-2007, 12:30 AM
I just recently bought a 2004 Honda Civic Si Hatcback. I was wondering what would be a good brand of catback exhaust and also if I was to just buy a good muffler and went toa muffler shop and got them to put me on some 2 1/4 piping and just added the muffler would i still gain the same hp and sound as the catback?