This thread is dedicated to Invidia exhaust systems for the 9th Generation Civic Si. Please keep information/questions about this particular brand of exhaust system limited to this thread to avoid confusion on the forums and to keep it neat and tidy. Q300 Exhaust: Specs:
The below was taken from the Hondata forums.
"Reflash with CAI
It is my understanding the stock 2012 Si is very adaptive, meaning it easily rejects bolt-on mods and continually makes corrections returning any benefit one might get from a properly designed Air Intake back to stock...
With my older Civic, i found Spoon Sports and T1R to be my top favorites for performance. I used some Injen parts in the past, but i ended up selling them within weeks of buying it.
What are your favorite aftermarket performance brands?