BMW 440i (F32/F33/F36) (17-21) Resonator GPF/PPF Delete Performance Exhaust T9363 In summary

In summary

Depends if you want sound or not

4" may not work with this product

Free up to 12bhp by replacing the restrictive Gas Particulate Filter and increase the noise of the exhaust

or drop boost pressure if your oil/water temperature is high or the water/meth system runs dry

BMW 440i (F32/F33/F36) (17-21) Resonator GPF/PPF Delete Performance Exhaust T9363 In summaryFits 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