Pipercross Induction Kit - E46 320i / 323i / 325i / 328i

Maximum air flow to increase power and acceleration
Foam element design lasts longer than other filters
Distinctive induction noise on full throttle
Replaces the restrictive factory air box with a cone filter
An easy DIY job - fitted without special tools

Why replace the factory standard air-box? Standard air filters along with their housings are designed to perform a satisfactory filtering job whilst keeping noise levels down. Ideal if you're an old lady going to the shops, but not if your interested in performance! Getting rid of the air box and replacing the standard paper filter for a sexy cone filter not only looks great but performs so much better.

What's so good about a Pipercross? Most after market air filters perform well when they are new. The real test is to see how they perform after a few weeks in the car, once dirt has begun to build up. Pipercross use a specially developed polyurethane foam for their filtration which has excellent dirt storage capabilities. This means that they will perform better, and for longer between cleaning intervals than any other type of filter.
How does this improve performance? You'll have seen cone filters used on thousands of race cars. They're there for a reason! A cone filter allows far greater volumes of air flow into the engine. More air provides more oxygen for combustion, which gives greater efficiency and more power.
What about the sound? A cone filter will create an awesome induction "roar" when you apply full throttle. In general driving there will be no discernable difference in noise level compared to a standard air box It's only there when you put your right foot down! Factory standard air boxes are designed to muffle the sound. That's fine if you want to listen to Radio2 whilst visiting the garden centre! As a performance enthusiast you'll crave the induction sound that you get when the throttle's wide open!
How does this noise compare t