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08-09-2017
http://www.motorcityreman.com/97grpr3.html
I recently put a Fosgate power 1000 in my car (2000 GTP) Now the lights dim something crazy. If I turn it way up the car will actually start skipping like it needs a tune up. Definitely time for an upgrade. These folks have a 160 amp remanufactured alternator for $140. And a 200 amp for $160.
08-10-2017
If it sounds too good to be true, it probably is. My buddy picked up one like that, Claimed to be 150amp+ and we couldn't get more than 80 out of it. (Don't think it was from this particular company, there are a few out there.)
I had Mike Singer (Singer alternators) make me a 250amp alternator for like $400ish. It tests at 255+amp.
He makes ours for like $250-600 depending on amperage. My car stays pinned at 14.9v when its running and I have over 4500 watts of amplifiers. Lots of people run his custom alternators around several car club forums.
08-12-2017
Genuine HO alternators that last and can push what they're rated cost quite a bit. I have one from DCPowerInc, got it about 4 years ago, and it's still going strong. 110 at idle, 270 at 2K RPM, but it cost me about $400 if I remember correctly. It's essentially a truck alternator rebuilt with massive windings and came with a bracket to adapt to a 3800.
That said, I have heard good things about Signer alternators as well. I'd at least try upgrading your charging system wiring first (you'll need to anyway to get the most out of a HO alternator). And make sure you're using full copper wire, none of that CCA junk. Welding wire is way cheaper than "audio" wire. An AGM battery couldn't hurt either.
08-13-2017
What is your totally draw? Before you look into a new alternator you need to know how much power you are using, buying an upgrade that still isn't big enough won't do you any good.
http://www.qualitypowerauto.com/page...Calculator.php isn't perfect but gives a good general idea.
Further, did you install your system personally or have it done professionally?
If personally did you perform a "Big 3" upgrade? Did you put a capacitor in? What levels do you have your amps set at?
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08-13-2017
A capacitor is a hindrance and not a help.
08-14-2017
According to that page I'll need 186 amps. The system was professionally installed. I haven't done the big 3 yet. I don't have a capacitor. I don't plan on getting one either. From what I've read they're pretty much just a bandaid for a weak electrical system.
08-14-2017
I wouldn't even call them a bandaid. They are like putting a piece of paper over a cut that needs stitches. Dimming lights and other issues are the result of the alternators inability to keep up with the demand. A capacitor acts as a second battery for that already struggling alternator to charge.
08-14-2017
I agree that a capacitor is not a cure for the issues here, I was more inquiring about it to find out more about the system and other pieces they had installed.Originally Posted by stealthee
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