Doesn’t the impellor fan block the intake and restrict the air flow?
No it doesn’t. The Force Flow 4.0 inlet flow area is 95mm wide, so with that size inlet minus the area that is blocked by the motor, the inlet area is actually larger than that of your standard 3.0 inch (76mm) intake pipe. So even if you installed the unit and never switched it on, you would have a far more effective intake system than your stock setup. Having this inlet area big enough was one of our biggest design features, as it is the flaw of some other Electric Supercharger units available on the market today.
