Don't let a flimsy paper filter get between you and true performance. The PERRIN Performance™ dual stage, "Open Cell" foam, drop-in Panel Filter is the answer. Increases in horsepower are a simple easy install away! Quick cleans are simple with our aerosol cleaner and spray oil located here: http://perrinperformance.com/products/show/65/Filter-Cleaning-Kit?category=3&model=2   Make sure to wipe off excess oil on the fillter!