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Noob Question:
Is there any negative effect that an underdrive pulley might have on our cars, like durability, reliability, and increased wear and tear?
They'll make your alternator, air conditioner compressor, power steering pump and water pump operate about 25% slower than their original speeds. If you have an aftermarket stereo system that increases the electrical load you might have a problem with the alternator not being able to keep up (more so at idle speeds).
I have used them on two cars. In both instances I have noticed a different. Was it night and day no. However, it was more of a difference is both cases then some mods that cost a lot more.
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RE: Underdrive Pulley? Worth it?
