Honestly, that's cute, but I doubt it makes much gains. It can now directly draw in hot engine bay air from the top, and the surface area of that tiny filter is marginally more than the stock flat filter surface area.
All the other restrictions of the stock intake are still in place, too...
Cant speak for AEM but the few people I know with BMS intakes say they only have positive gains. There’s no low end torque loss and actually gained about 30wtq peak and almost 70wtq at 1800rpm.If this design is lacking in performance I am leaning towards the AEM or Burger Motorsports system but am concerned about low end torque loss.