BMW M4 (F82 F83) Active Valve Sport System (2014 on)

BMW

BM444T

DETAILS 

The system fits the 2014 on model. This active valve system allows the driver to switch from a refined tone to crazy race car loud in an instant and comes with our special carbon sleeved tips to define the look.

 

 SOUND

SPORT Mode OEM  QS Valves Shut  QS Valves Open
Tick Over LH 83.5 db / RH 82.5 db LH 83 db / RH 82.5 db LH 88 db / RH 87 db
2000 RPM LH 78 db / RH 83 db LH 83 db / RH 87 db LH 86 db / RH 85.5 db
3000 RPM LH 81.5 db / RH 80.3 db LH 94.5 db / RH 96 db LH 100 db / RH 98 db
4000 RPM LH 87 db / RH 87 db LH 99 db / RH 99 db LH 104 db / RH 104 db

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