I did this one and it works fine in my 2011 Release Series 8.0. $70. bucks plus $24 shipping and no light comes on. Some of the naive people will tell you, you have to get the K & N ones or the really expensive ones or you will have all kinds of issues and lights coming on. I drive 41,000 miles a year to and from work. I have 23,000 on my car already this year and I bought it January 16th 2011. No issues on it at all. Also, get any crap from the dealer about it? http://www.me-mag.com/Upload/magmoss.pdf Hit that up. I am not a believer, I am a tester.
http://cgi.ebay.com/ebaymotors/SPYDER-POLISHED-08-11-SCION-xB-2-4L-COLD-AIR-INTAKE-KIT-_W0QQcmdZViewItemQQfitsZMakeQ3aScionQQhashZitem5ae1ccb5aaQQitemZ390335346090QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories