I have a K&N SRI for my 07 Honda civic ex and it sounds good but not that loud, I prefer a more "masculine" but not ratteling sound so I advice that u change your muffler after you installed youre cold air intake. The sad thing with K&N is it just give you 5-6 HP gain.
But I just bought an INJEN cold air intake and just about to install it on my 08 Honda Civic LX, i browsed on YouTube and i like how it sounds/resonates when combined with the SKUNK2 mufflers, and gives you more HP + torque gains.
Ill update you after I install it ;)
The 2008 Honda Civic has 16 valves.
The 2008 Honda Civic is a gas-powered vehicle.
The 2008 Honda Civic has a 5-speed manual.
The 2008 Honda Civic has an inline 4 engine.
The towing capacity for the 2008 Honda Civic is 1500 lbs. The 2008 Civic Hybrid is 1000 lbs.
The height of the 2008 Honda Civic is 4 ft. 5.5 in. (53.5 in.).
The 2008 Honda Civic runs on regular unleaded.
The 2008 Honda Civic has single overhead cam (SOHC).
The 2008 Honda Civic is 14 ft. 6.8 in. (174.8 in.) long.
The curb weight of the 2008 Honda Civic is 2586 lbs..
The 2008 Honda Civic's turning circle is 35.4 ft.
The 2008 Honda Civic has 42.6 in. of front leg room.