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Message: <blockquote data-quote="Workin for DBs" data-source="post: 7740255" data-attributes="member: 635496">Okay well in a couple of weeks I'll try doing the Big 3 upgrade... and I've heard that the alternator is more important to change than the battery...It's in a 2002 explorer v8, and I think the alternator is 130A but not too sure. I do have a dmm...The box I built from the specs of the design off ssa's website for optimal ported which is 4 cubes after displacement I believe tuned to 30 hz. The port is 3.5 inches wide and I think like 26 inches long or something...my dad and I built the box built the box pretty **** well I must say, really the only problem is that I cut the whole for the sub in the center and it was supposed to be 2 inches off center but I doubt thats affecting much</blockquote>

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