AO Platinum Member
Join Date: Aug 2003
Location: London, England
Re: Do we need aftermarket intake/filter?
The advantage of K&N, Pipercross etc is that you never need buy another air filter; you just clean & re-oil every year.
For example a std paper filter for a 156 costs £14, an Autodelta/Pipercross filter is £28. So the Autodelta/Pipercross filter works out cheaper after two years.
(Yes I know the std service schedule only lists an air filter change every 2-years/24000miles but that is just being stingy, you should really change every year/12000miles)