BMW 440i **MPPSK** LOUD!!!!

BMW 440i MPPSK. I was underwhelmed by the standard 440i and 340i as they don't offer the same performance as the M140i mainly because they are heavier and the B58 engine in them is detuned (for obvious reasons). Find out if the M Performance Power and Sound Kit (MPPSK) makes any Difference!
For a in depth review of a 4 series vs a 3 series and xdrive vs Rwd please view my video in the link below:
• BMW F36 4 Series GC or...
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