No.. Don't DUMP the cap.. Just DON"T use it as a band-aid.. Caps are great at stablizing vehicle voltage.. Especially if you use it specifically for ur Sub amp.. I've had a lot of luck with Optima yellow top batts (D34/78).. they give you a maintenance free batt with plenty of reserve(for about $175), and If u use it in conjunction with, big 3 upgrade, and the appropriate cap, a,la 2 farad in ur case), you'll be good.. The debate on caps in this forum is neverending.. a place for everything and everything in its place.. You CAN'T depend on cap in place of H.O. alt, proper wire gauge and batts, BUT, in addition to them they're an excellent source for quick bursts of juice.. Bring on the haters..