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q300 or n1

  1. Best exhaust for 2013 Si (not loud or quiet)

    Si Only
    Hello, I'm new to the forms, just got a brand new 2013 FG4 in June, hasn't had its first oil change yet. The first mod I would like to do is upgrade my exhaust. I know there are numerous threads about exhausts witch I have read and would just like a opinion, so please keep the "use the search...
  2. Invidia Q300/N1 Civic Si Exhaust Thread

    Exhausts and Downpipes
    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: Large...
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