Hey guys, for sale is a mint condition Invidia Q300 exhaust for the 8th gen Civic/CSX. I only used this exhaust for about 3-4 months. The piping diameter is 70mm or 2.75". I believe stock is 55-60mm for Si/Type-S.
In my opinion, this is
THE PERFECT EXHAUST if:
1) You daily drive the car
2) You like the stock Si/Type-S exhaust, but want something a bit louder
3) You don't want a loud exhaust
4) You want perfect fitment
5) You don't want to wake up any neighbours
6) You don't want to lose your hearing
It offers better performance compared to the stock exhaust, but how much I can't tell you exactly because I put it on together with my race header. Together, the combo gave a significant boost in power when compared to stock.
Note: The exhaust does get louder after some aggressive driving, and IMO that is when the exhaust sounds absolutely perfect.
PICS HERE:
PRICE: $550obo Brand new is about $800 after shipping and taxes.