BMW G22 G23 M440I TWIN VALVED QUAD EXIT GPF/PPF BACK PERFORMANCE EXHAUST

This exhaust removes the factory exhaust outlets and replaces them with a choice of quad exit exhaust tailpipes. This BMW M440i (G22) performance exhaust is made in 3"/76.2mm pipework and fits from the GPF section backwards (GPF-back), this exhaust replaces the centre and rear sections. Single Valved GPF Back Test Results - Sport mode: Engine at Idle: 65.9dB (+7.6dB) | Static 4,000rpm test: 88.1dB (+6.2dB) Twin Valved GPF Back Test Results - Sport mode: Engine at Idle: 61.7dB (+3.4dB) | Static 4,000rpm test: 87.8dB (+5.9dB) This exhaust removes the factory exhaust outlets and replaces them with a choice of quad exit exhaust tailpipes enhancing the styling of the rear of the car. This setup is available in two options: The twin valved setup includes an intricately designed larger rear silencer to fully utilise the M440i's built in drive modes, allowing the exhaust to change from quieter cruising tones in comfort mode to much louder tones in sport mode. The single valved setup includes a smaller and louder 'race' style rear silencer for a larger upgrade in overall sound in all drive modes. This setup offers improved sound and louder tones in all drive modes. All relevant fittings and gaskets are supplied.