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Discussion Starter #1
i was cruzein around the internet and came across the CFM alum underdrive pulley set and just wanted to know if anyone else had used these and if there worth buying.. please give me any feedback you may or may not have
-Thanks
 

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Alot of people say no, I honestly have no clue how effective they are on a Focus. but everyone seems to like weight reductoin and does are it also, I see it less stressful also. But other well known memebers such as Tom say says he wouldn't even put them on if he got them for free.
 

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Tom, would you not put them on an N/A car as well?
 

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I wouldnt put them on anything NA or boosted

Main thing is they dont add enough HP worth the install time let alone the cost and I dont like that they take the factory harmonic balancer off the engine

Tom
 

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I have them on mine and put them on when I did my timing belt. I don't have any complaints and I've never seen anyone mention an issue with the harmonic balancer. I'm sure C-F-M would have heard complaints if crankshafts started fouling because of the UDP kit.
 
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