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underdrive pully question

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Old Feb 25, 2002 | 06:11 PM
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abraham
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Default underdrive pully question

Will I have any problems with a under drive pully if I have a amp in my car. I didnt even think about that but someone today told me I might have a problem. Whats the scoop?
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Old Feb 25, 2002 | 07:16 PM
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Default Re: underdrive pully question (abraham)

The issue is, at idle, the underdrive pulleys may not provide enough current to drive high demand stereo amps. I have the UD pulleys, and tested with the stock stereo on high, A/C on high, lights and fog lights on, and had no problem, but the stock Bose is, perhaps, power challenged, shall we say? Good luck. :chevy
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Old Feb 26, 2002 | 07:15 AM
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abraham
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Default Re: underdrive pully question (abraham)

Anyone else have any experience with this? Should I not put it on?
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Old Feb 26, 2002 | 07:23 AM
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Default Re: underdrive pully question (abraham)

No problems here, and have a V12 amp, not even battery Cap yet either. If you get a 3 peice, the Alt pully should be smaller, spinning it faster, so your not underdriving it by much.
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Old Feb 26, 2002 | 01:53 PM
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Default Re: underdrive pully question (Buckmaster)

I had no problems and I had 2 aftermarket amps in use.
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Old Feb 26, 2002 | 02:01 PM
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Default Re: underdrive pully question (abraham)

I've never had a problem!
Tim
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Old Feb 26, 2002 | 02:53 PM
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Default Re: underdrive pully question (C54TIM)

There doesn't seem to be any issues with the UDP, except for the tedious install.

My gauges read between 13.9-14.5 volts.

There is a seperate issue with lights dimming when accesories are used (mainly with the HVAC system on) but that happens in cars without pulleys too.
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