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Message: <blockquote data-quote="brian84corvette" data-source="post: 8298536" data-attributes="member: 586635">alot of "high output" alternators are just re wound to produce better electrical at higher rpm - but the cost is they produce worse than stock at idle rpm.a clamp meter capable of measuring dc amps when its arms are hooked around the wire - would be capable of measuring amps produced as a test so you could see exactly what your alternator is producing at what rpms with heavy bass music playing.you might find that your only getting 65/75 amps at engine idle - and 140 amps at 2000 engine rpm and up.that might not be the case tho - so it would be cool if you found a buddy with that clamp meter to test your alt out and measure / record what its doing</blockquote>

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