they're pretty big on imports....not sure if they are necessary/ really do much.


A larger capacitor would be more useful if you're really worried about voltage spikes. i was half tempted to mount a big one in the 2nd battery location, just because it annoys me when I turn on my lights/efans and the voltage drops down to like 13 for a second in the truck. I've never noticed a drop at WOT though.