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Old 05-24-2012, 01:17 PM   #1
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UDP help...

This might be a dumb question... but if I put a new UDP on do I have to re-tune my chip?
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Old 05-24-2012, 01:37 PM   #2
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Re: UDP help...

Nope, all the UDP does is reduce parasitic drag by slowing down the rest of the accessories. It has nothing to do with air/fuel or ignition timing. Install and enjoy.
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Old 05-24-2012, 01:39 PM   #3
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Thanks, now any idea where to buy one for a V6 I was reading other threads and it seems they are not so easy to find.
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Old 05-24-2012, 01:59 PM   #4
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Re: UDP help...

I have no idea what year your car is, so I included everything from LateModelRestoration.com for the V6.

I got this one a few weeks ago...... this is for 01-04 which are internally balanced.

2001-04 Mustang 3.8L Underdrive Crank Pulley And Harmonic Balancer at LRS - Free Shipping!
The receipt showed they had THREE in the warehouse when I got mine.

For the 99-00 you need this one 1999-00 Mustang 3.8L Underdrive Crank Pulley And Harmonic Balancer at LRS - Free Shipping!
Which are externally balanced.

94-98 is cheaper, 1994-98 Mustang 3.8L Underdrive Pulley Kit w/ Belt at LRS - Free Shipping!

There may be other brands, but the cars are getting older and most have ceased production. ASP is the only manufacturer I could find that still makes them for the 01-04...
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Old 05-24-2012, 02:24 PM   #5
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Sorry it's an 02' and thanks, I'll look it up tonight. If I get one you said it doesn't mess with timing, so is it pretty much just take off the belt, tale off pulley, put new one on and put belt back?
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Old 05-24-2012, 03:50 PM   #6
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Re: UDP help...

Different size belt after install of course.
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Old 05-24-2012, 03:55 PM   #7
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Yea I didn't think of that, and I could use a new one anyway. Thanks for the info.
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Old 05-24-2012, 04:57 PM   #8
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Re: UDP help...

The ASP one on LMR mentions a Gates brand belt part no. K060966. 3rd store I went to had Gates belts. I believe it cost $27.
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Old 05-25-2012, 08:49 AM   #9
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Re: UDP help...

Good info- Gates belts are worth searching out. You get what you pay for.
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