8th Generation Honda Civic Forum - View Single Post - air filter

skittleslegend · 05-13-2006, 01:06 PM

If you're talking about the K&N drop in, the R18 has it's own filter. It actually came out first.

Just as an FYI, one isn't necessarily better than the other if they come from the same company. The difference is in how efficient the air intake system (including the filter) is. If it's less efficient from the factory, you'll typically see larger gains than on one that has been optimized from factory specs, like the Si's. By efficiency, I'm measuring based on hp unleashing of course.

05-13-2006, 01:06 PM	#2 (permalink)
skittleslegend Senior Member Member Join Date: Sep 2005 Location: Stowe, Vermont Age: 27 Posts: 7,824	If you're talking about the K&N drop in, the R18 has it's own filter. It actually came out first. Just as an FYI, one isn't necessarily better than the other if they come from the same company. The difference is in how efficient the air intake system (including the filter) is. If it's less efficient from the factory, you'll typically see larger gains than on one that has been optimized from factory specs, like the Si's. By efficiency, I'm measuring based on hp unleashing of course.