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Old 05-27-2010, 05:51 PM   #1
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underdrive pulleys??

why would i need underdrive pulleys and what are the differences between them?


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Old 05-27-2010, 05:54 PM   #2
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they don't add any power but I have heard it doesn't bog so bad with the AC on. Keep in mind you would likely need a different belt
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Old 05-27-2010, 06:00 PM   #3
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how would you determine if you need a new one or not and how do u figure out the length
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Old 05-27-2010, 07:16 PM   #4
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don't get em, they can throw your engine harmonics out of whack
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Old 05-27-2010, 09:02 PM   #5
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Worthless mod , doesnt add power

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Old 05-28-2010, 01:05 AM   #6
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Not only does an underdrive pulley *not* add power, there are multiple accounts of oil pump failure because of the added harmonics. It's bad mojo.
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Old 05-28-2010, 04:21 PM   #7
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alright thanks guys...you just saved me some cash lol
i thought they were actually worth it
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Old 05-29-2010, 11:36 AM   #8
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Most mods aren't worth it... unless your going fi. Nitrous is the cheapest most dangerous way to actually make power.
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Old 05-29-2010, 12:51 PM   #9
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He has a SVT one of my tunes would help a good bit

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Old 05-29-2010, 03:02 PM   #10
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My car had them on it when I bought it,I removed them.I think my car ran warmer with them on it,and who needs higher temps.
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