Yanimoe
Member
Just ordered (from PRO Civic) the following items for my 2013 Civic Si Sedan to replace original parts: Injen Cold Air Intake; Skunk 2 Alpha Series Header; and Invidia N1 Exhaust System. Looking forward for a better exhaust "sound" and to maximize current HP numbers. Parts should arrive in a week or two, so any feedback related to installation issues or concerns I should be aware of please feel free to discuss. I'll appreciated all the help I can get. 
