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<blockquote data-quote="jrwalte" data-source="post: 4777841" data-attributes="member: 584454">I&#039;m basing the 130A guess on how the voltage was with my stock 90A alt.&nbsp; It can go a little louder, but not much.&nbsp; My system is 1900RMS and under good conditions 180A alt should be able to handle that without dropping into the 12s and even the 11s when driving at over 2000RPM.I&#039;ve had the alt in for over 3 weeks now on a 2 month old Kinetik so I don&#039;t think battery charge would be an issue (no, I didn&#039;t charge it first). The pulley is under 2&quot;. I originally had to return the alt because the pulley wasn&#039;t small enough and the alt wouldn&#039;t perform at idle (it does now).&nbsp; The other odd thing is the system seems to handle almost as well at idle as it does when I&#039;m driving over 2k.&nbsp; I could go to volume 43-45/60 instead of 38-40/60 when idling before dropping below 13.2 while usually maintaining 13.9+This is making me believe I may have a ground issue. I&#039;m currently grounded to my wheel well frame using a streetwire grounding block (sanded, bolted with lock nuts and loctite). I plan on buying a run of 1/0 knu flex and running it directly from the built-on ground bolt on my alt to my distro block in the rear to see if my current throughput improves.This is one reason I want a clamp meter.&nbsp; To check current at alt and then at amp.&nbsp; If the alt and amp are the same, I probably have a throughput issue.&nbsp; If the alt is less than at the amp, then my alt isn&#039;t outputting what it should.</blockquote>

[QUOTE="jrwalte, post: 4777841, member: 584454"] I'm basing the 130A guess on how the voltage was with my stock 90A alt. It can go a little louder, but not much. My system is 1900RMS and under good conditions 180A alt should be able to handle that without dropping into the 12s and even the 11s when driving at over 2000RPM. I've had the alt in for over 3 weeks now on a 2 month old Kinetik so I don't think battery charge would be an issue (no, I didn't charge it first). The pulley is under 2". I originally had to return the alt because the pulley wasn't small enough and the alt wouldn't perform at idle (it does now). The other odd thing is the system seems to handle almost as well at idle as it does when I'm driving over 2k. I could go to volume 43-45/60 instead of 38-40/60 when idling before dropping below 13.2 while usually maintaining 13.9+ This is making me believe I may have a ground issue. I'm currently grounded to my wheel well frame using a streetwire grounding block (sanded, bolted with lock nuts and loctite). I plan on buying a run of 1/0 knu flex and running it directly from the built-on ground bolt on my alt to my distro block in the rear to see if my current throughput improves. This is one reason I want a clamp meter. To check current at alt and then at amp. If the alt and amp are the same, I probably have a throughput issue. If the alt is less than at the amp, then my alt isn't outputting what it should. [/QUOTE]

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