Anyone know of any websites that i can go onto to see aftermarket catback systems/ loudness/ hp+ ?

 

I don't know of any one website that catalogs the different exhausts but if you go to the individual manufacturers website ie.. Flowmaster or Magnaflow they will have clips of exhaust on different cars. Flowmaster has I nice vidoe of installation on an Integra and how it sounds

 

http://www.tprmag.com they had a show down on exhausts... should be pretty easy to find from the main site

EDIT: http://www.tprmag.com/issue/3/3_exhausts.shtml theres the link....compares sound and performance