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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 primary piping diameter.
  • Full SUS304 polished stainless construction.
  • Full cat-back exhaust system.
  • Choice of Polished or Burnt Titanium tips.
  • Large muffler for sound control.
  • Robotically TIG Welded.
  • Race-style resonator (yields the most power).
  • Bolt-on design for simple install.
  • No silencer required for street use!
Price: MSRP: $728.00? ImportDPS: $425.00/coupe, $582.40/sedan (www.importdpsonline.com) ProCivic: $509.60 (www.procivic.com) Video Clips:
--------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------- N1 Exhaust Specs:
  • Designed to increase mid-range and top-end horsepower more than other exhausts.
  • Large primary piping diameter.
  • Full SUS304 polished stainless construction.
  • Full cat-back exhaust system.
  • Choice of Polished or Burnt Titanium tips.
  • Large muffler for sound control.
  • Bolt-on design for simple install.
Price: MSRP: $676.00 (www.invidia-usa.com) ImportDPS: $540.80 (www.importdpsonline.com) ProCivic: $473.20 (www.procivic.com) Video Clips:


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Invidia has just released two new exhausts for the 2012 Civic Si Sedan and Coupe. Both look amazing IMO.

The Invidia Q300 Exhaust is designed for customers who want a "mild" street exhaust, with a deep sporty tone that isn't too loud. Amazingly though, the Q300 still produces great power gains.

The Invidia N1 Exhaust is more aggressive, in both looks and sound. It is geared more towards all-out power, and the gains are more noticeable at higher RPMs. Plus, it comes with a nice looking burnt titanium tip.

For more information about each exhaust, follow the links below:

2012 Civic Si Invidia Q300 Exhaust at PRO Civic

2012 Civic Si Invidia N1 Exhaust at PRO Civic


Invidia Q300 Exhaust for 2012 Civic Si


Invidia N1 Exhaust for 2012 Civic Si


The images are actually from a 2DR Si application (I believe), but the 4DR and the 2DR look virtually identical.
 

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Yeap got mine last week ;)
 

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October K24Z7 2012 ROTM Winner
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I've seen your videos on youtube! You've got a nice ride!




That's his car w/ the Q300 on it.


I've heard that the 2-1/2" systems are better than the 3" because 2-1/2" exhaust gives more gains in the midrange where as 3" systems typically give their gains in the higher range.. This opinion is shared by a lot of the people in my local car club.
 

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Any vids of the N1 installed on the 12' si ?
 

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So which one is a better system, the N1 reminds me of the old greddy ti-c catback exhaust I used to have her I miss her, is the n1 like her? So the n1, is a little louder, really? Or for more performance? I have a takeda Cat back exhaust love it, but kind of want something with a little more roar, so people hear a nice clean, deep tone, and say dam I like that, which I get, but I love that tip haha lol
 

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I just installed my Q300 on friday. So far I love it, it sounds a little louder than stock and in my opinon is the best exhaust! Only problem is for some reason mine is banging on something, I have to double check if I left anything loose, but besides that this exhaust is great!
 

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That's basically the exact sound I want. Not too loud but can still hear it. I want to be heard to a degree but not all the time. From what I've watched from the 8ths the N1 could be heard even from a slow take off and was quite loud. I know a guy with a q300 on his type s and he loves it.

Plus I think a downpipe will make it a little louder to find a good medium
 
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