"The BLOX Racing air filter is designed to maximize incoming airflow while providing maximum particle filtration. The dry filter element does not require any oils and is easily cleaned. The 6” opening is ideal for any BLOX Racing velocity stack, which when used with the air filter, dramatically increases intake airflow."ok i am back . and damn look at the mass l made LOL> anyway ignore my question . wat l meant to ask is which http://www.gearheadsonline.ca/shop/product.php?productid=16201&cat=0&page=1 this be better then the 3" Air Filter i have a feeling one of u guys have already answered my question though