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**jybute** · 12-18-2005, 02:21 PM

So, what do you guys think, I hear a lot of you talking about them on your cars, is there that much difference? What would you say the cost to performance benefits are? If any.

12-18-2005, 02:21 PM	#1
jybute Name: jybute Title: Senior Member Status: Offline Join Date: Jun 2005 Location: Edmonton,AB,Canada User not setup in Rate My Car. Click here to set it up. Your Ride: 2006 330xi, 2007 X5 3.0	underdrive pulleys? So, what do you guys think, I hear a lot of you talking about them on your cars, is there that much difference? What would you say the cost to performance benefits are? If any.

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