for people who have the cai injen intake i was wondering how long can i use the cone filter before i need to buy another one... b/c i have been using it for 5 months and its getting a tad bit grey in the middle...

 

You actually can clean the filter and re-use it....

Check here for more info...

http://www.injen.com/faq.html

 

i dont really remember, but the guy at my local motorsports shop told me that u dont have to clean it for a couple years. and if u drive next to the beach a lot, you would have to clean it sooner