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Discussion Starter #1
I'm thinking about addicting a small sub this summer when I refinish the hatch. I'm not going to add anything crazy, but I'm concerned I may not have a lot of power left to run a new system. I just installed a new ASP U/D pulley. This is in my 300zx N/a. I did however buy the TT alternator a while ago which has a little more power output than the N/a version.

Basically, I need to find out how much power I have left over, and if it's enough to add another amplifier to power a small sub. Obviously it would be at idle when the least amount of power is generated. I don't want to go and buy a new amp and sub-woofer if my current set-up cannot power it.

So is there a way for me to measure my output so I could calculate how much lee-way I have at idle?
 

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Discussion Starter #3
hm, I do have an extra cap over the garage from the previous set up. I'll have to see what its rated at.
 
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