The Defenders of Speed High Flow Dry (No Oil) Cone Filter Upgrade Kit replaces the restrictive paper cone filter on the John Cooper Works Stage 1 Airbox for the N14 engine. Free-up 3-to-5 extra horsepower and stop buying expensive one-time-use air filters from MINI with this lifetime use, cleanable cone filter from DoS. Check it out here: High Flow Dry (No Oil) Cone Filter Upgrade for OEM John Cooper Works N14 Stage 1 Airbox - Defenders of Speed, LLC Store Thanks for the M/A community for your continued support of Defenders of Speed. -Clint