Joined
·
18 Posts
What up just got a completely stock 06 civic si about a month ago and stumbled upon this site, its sick to say the least. I was curious about an exhaust, I have a tip already but as far as the size if I were to do a cat back. Ive heard 2.5 or 2.75 at the largest but i'm still not sure. Also, cold air intake advice and some chip or ecu advice if you guys wouldnt mind. Thanks. Will have pics up soon