Pipercross Car Panel Filter PP1773 911 This frees up the exhaust

This frees up the exhaust system

the stock HPFPs internal volumes become a limiting factor when increasing power

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Pipercross Car Panel Filter PP1773 911 This frees up the exhaustPipercross Panel Filter PP1773 measures 301mm x 161mm Benefits of a Pipercross panel filter: 30 40% more air flow over your OEM paper filter Better for the environment (washable and reuseable) Improved fuel economy Lifetime warranty on manufacturing defects Handmade in the UK The low maintenance and long lifespan aspects of a Pipercross filter come from the special triple layer foam that is used on all Pipercross filters. The outer core is coarse foam