Enough alt?

[loudNlow87]

Yea I run mine full tilt on a 130a alt and i never dip into 11's. Stone stock electrical too

Edited June 11, 2012 by loudNlow87

[05 obs]

this is why im going with the 110 it comes on the 09+ wrx/sti/forester so they can be found inexpensively.

[Miguels]

I have come down in my expectations of what I am going to run, I am not going to be anywhere near 2.5-3k watts. So running right at 1.5-2k watts would a 110amp alt, big 3, current battery up front is an agm 640cca battery, and then like a shuriken,nvx,kinetik,power xs 600 in the back with all 0ga runs except to the amps which take 4ga be enough?

no.. just your stock electrical uses about 90 amps

check your voltage after you have upgraded your electrical. you might need a 170a or 200a alt

now i really much doubt that unless he drives with the ac on full blast, headlights on, brake lights lit (like when braking), rear defrosters on, heated seats on, side mirror defrost, and front and rear windshield wiper going full blast

stock alternators was made for the cars electrical anymore and it strains it. adding more batteries only puts more strain on it, it could take 2 years for it to burn out or it can take a week.

2k watts draw around 86a to 100a it only gives you 10a to 25a to run your car.

Edited June 11, 2012 by Miguels

[Socky]

im running a apsm 1500 and a crunch 1100.2 on a stock alt and while driving doesnt drop below 13.7-8, idle it drops to 12.9, thats with a redtop and kinetic hc800.

stock alt is 90a

Edited June 11, 2012 by Socky

[MrSkippyJ]

It really depends on how much and when your play your system loud. I have 2k on a stock alt and yellow top but don't run full out very often and when I do it is usually short amount of time. Do the big 3, get a volt meter and see what your voltage does. If you find I tends to drop too low, start with adding a second battery. If that doesn't help you know you need a bigger alt.

[05 obs]

I have a volt meter i drop in the low 11's at full titl. headlights dim at about half volume. it is a known thing with subaru i have to do big 3 and grounding mod since they do grounds after they paint the car so they tend to have shit grounds.