Fits both PPF and earlier pre-PPF models - requires mandatory ECU reflash when fitted to PPF models. Fitment to PPF-equipped models is for motorsport and off road use only.Cobra Sport performance exhausts enhance the sound, looks and quality of your vehicle giving you the ultimate driving experience. Our sports exhausts range is fully guaranteed to give you assurance of our quality.This BMW 440i performance exhaust is made in 3inch/76.2mm pipework and fits from the catalytic converter section to before the rear box replacing the whole centre section.This exhaust makes the system louder as it removes the standard resonator or PPF filter on later models and both resonators on earlier models and therefore, offers a significantly sportier exhaust note.All relevant fittings and gaskets are supplied for fitment and to revert back to the standard exhaust.Fitment to later 440i models which have the PPF filter as standard will require basic engine tuning at time of fitment to cancel the EML light.Fitment to PPF equipped models is for motorsport and off road use only.