I bought this to help my system play better without cutting out. Damm!!!! This thing makes a great difference. I have 2 12.4 orion hcca and the hcca2500.1 amp pushing them. Anyone who knows about orion knows they need lots and lots of jusice. I have a shurken 100cca, yellow top and kinetiks. It used to drop from 14.4 to 12.1 even when i was doing 120 on the highway. Now at idle the lowest it goes is 13.4 - 13.7. I definately would reccomend this cap for big systems. Oh and my alt is stock. 122 amps..:)

Have done Great, I had two of them in my Truck with over 7000watts of power RMS, with a yellow top and the stock thirteen year old 130amp Alternator and it kept the lights from dimming too bad, all things considered I think they did a great job. One of them had an issue with the LEDs for the display not working but after a little while i guess it just worked itself. in all was working fine last i Checked.

Cons: Looks are great, the smoked plastic looks great, but the Chrome is just Chrome plated plastic, they do feel kinda Cheap, But not a big deal, Cuts down on weight I guess.