I got an Invidia N1 cat back and it sounds GREAT!!! its 2.5" piping and looks amazing. as far as power gains go, it definitely has more power but its not really a seat of the pants feel. I noticed that the rpm's are lower at certain speeds. (was running at 3500-3600 rpms @ 70mph and now i can run 3250rpm's @ 70mph in 5th gear, for example) it definitely makes more power in the upper rpm's than the lower rpm's.... but maybe thats cuz i only have a cat back.....and intake....Originally Posted by TypeRPersonality
if you plan on building your engine or swapping go with the bigger pipe.... hell...go with the bigger pipe anyways.... its worth it....Originally Posted by Mr. KiDD
i wish i had an audio clip of my exhaust so you could hear it...... im quite impressed.
by the way ive got a d16a6 in a crx si..... stock obviously