new system in 2003 civic si

[rangerone766 10+ year member]

Finally putting a new system in my si.

To start I will be running my sae-1000 and a eclipse 88150dvc dual 4ohm sub. I have a 1/0 run of cable from battery to hatch. Will my stock 90amp alternator keep up?

I do plan to get rid of the tiny underhood battery and use 2 group 65 AGM's in the hatch and add a 100-150x4 amp for door speakers and rear fill along with big 3. Will stock 90amp still keep up with that much draw with 2 batteries. I found a 130 amp alternator on eBay for a reasonable price. Would that keep up?

I'm not new to the car stereo scene, but this will be the biggest system I've had. And want to do it reasonably right.

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[DB-Audio 10+ year member]

yea it will be fine i just needed to do the big 3 to mine to handle 600 rms @ 2 ohms and it was fine

 

[rangerone766 10+ year member]

in the future i do plan to add a 100 or 150ishx4 amp to power doors and rear fill. and possibly a pair of 8's at 1ohm load. will the stock 90amp alt and dual batts cover that much load?

 

[mylows10 5,000+ posts]

get the bigger alt ,you'll be better off in the long run