1 farad vs 8 farad capacitor and wiring

I have a 1900w rms amp so a 2 farad cap should be good. I was wondering if I got a 8 or any of the higher farad capacitors would there be any downsides. My main concern was will a huge cap drain my battery when the car sits or will the alternator work a lot harder to keep those bigger caps full of power?

The amp is a mtx thunder 81001. It has a pos and neg terminal in the amp for a cap, is all I have to do is plug just the cap + & - into the amp and no other inline or other wiring?

Thanks

Yes.  Unless your charging system is able to handle the entire load of the vehicle and the audio system, including any caps you might add, you can overload it and cause more harm than good.  There is really no purpose for stiffening caps in most daily driver systems.

They are more like a bandaid not that I have not used them I had 2 on my old sytem did not pay anything for them, I was putting money aside for a hi output altenator but a south of the boarder drive hit my car instead.

Your better off saving the money and doing the Big 3

the reason ppl buy them is because ppl push to sell it and say it prevents dimming. that is true in a way because it fills in the voltage gap when your amp draws alot of current. the best thing is a big 3 and a HO alt. audiocable is spot on !