I bought a 91 Honda Civic Si over the summer. It now has a little over 191,000 miles on it. I was looking to do a little modification, and I figured the best (and most inexpensive) place to start would be exhaust. I was wondering what exhaust systems would be the best in my 4th Gen HB, and what everyone else here has in their rides. I hear good things about GReddy, DC Sports, and 5Zigen, but input from others is the best bet.