"using a cap for a fuel pump which will have a constant drain on power is useless. caps arent for that, caps are there to even out the current in case of drops, like when an amp hits. a battery is used for providing steady current "

no. power is dependant on both voltage and current which are twins (in a way). a regulated voltage source will provide an even current to the fuel pump. a cap WILL not only regulate voltage but also filter any unwanted a/c hitchhikers that may effect the system (be it car audio or not). an extra battery is fucking rediculous for a fuel pump, and its ability to maintain a steady voltage is no better than the current (no pun intended) battery in the car.

remember...current is a product of voltage (which fluctuates) and impedance (which is fixed for any one device). if you keep the volts even, you produce a steady stream of current. on something as small as a fuel pump, a cap could make a noticable difference. as for the audio aspect of them....im still unconvinced due to the transient nature of music, but thats a whole other thread.

:shhh: i do cocaine :/shhh: