You have to remember that, even in Dalton's liberal example, you will get an extra couple of volts, for a whopping quarter of a second, at 50 amps, with a 1 farad cap. To me, that's worthless.

Now, if you step up to a 10 farad cap, that would give you 2.5 seconds. Starts to sound worthwhile, but like Dalton said, you only need the cap input until your alternator and battery can catch up, which, unless you are at the full capacity of the alternator, won't take 2.5 seconds. So, for the most part, 10 farad becomes useless.

There are places where big caps come into play, and one place is in DB contests, in classes where the engine must be off. In these situations, .1db can mean alot, and you don't have the alternator to save you. Here, 'burps' are sometimes only a couple seconds, and 25 or 50 farads of cap can help.

All that being said, caps are like engine performance chips that promise 10 hp. If you want to believe it, you will notice the difference. And if you've put every other upgrade in, and just have to throw out some more money, you can either upholster your car with it, or really waste it on a cap.

Toby