Before typing please educate yourself.
The Eram in NOT a "bilge blower".
Let us compare the two.
"Bigle Blower"
-------------
~300 cfm
at best 0.1 pressure
at best 500 rpms
plastic construction
>50 watt motor
>15 amp draw
Eram
--------------------------
~750 cfm
0.5 or better pressure increase
~23,000
metal construction
<700 watt motor
<50 amp draw
The Eram has given people dyno proven HP gains.
A "bilge blower" like those so populaur on Ebay are a scam.