When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
i have the injen SRI on my car...i dont know about a bo valve sound when u let go the gas...but i do know when ur getting up in the rpms close to and past mivec it does have a nice whistle to it...(alsmost bo valve like)...