On all factory based Hellcat superchargers you MUST keep the vent holes open.
This includes all: Hellcat, Hellcat Redeye, Hellcat Demon, SRT Hellcat Durango, Ram TRX, Jeep Trackhawk or any blower which uses breather vent holes for the gear case.
To do this mark the blanket where you need a hole, you can use a knife, scissors or a hole punch.
Circled in RED is the breather holes.
Circled in GREEN are NOT vent holes there is no need to vent them.