2005-2014 Mustangs Discussions on the latest S197 model Mustangs from Ford.

Underdrive Pullys

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Old Jul 24, 2007 | 04:52 PM
  #1  
MuzDang's Avatar
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Default Underdrive Pullys

Can you guys really tell a difference when you installed yours?
Old Jul 24, 2007 | 04:55 PM
  #2  
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Default RE: Underdrive Pullys

Car revs faster. Other then that not really. The difference was seen at the track, which in my case equalled and surpassed the performance of removing the cats.
Old Jul 24, 2007 | 04:55 PM
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Default RE: Underdrive Pullys

did you?
Old Jul 24, 2007 | 05:09 PM
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Default RE: Underdrive Pullys

So Menace, youre saying you didnt really feel anything but the numbers proved otherwise? So was it really woth doing them? What are the drawbacks?
Old Jul 24, 2007 | 05:36 PM
  #5  
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Default RE: Underdrive Pullys

ORIGINAL: RodeoFlyer

did you?
not really i was just getting others peoples imput
Old Jul 24, 2007 | 05:39 PM
  #6  
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Default RE: Underdrive Pullys

ORIGINAL: Menace

Car revs faster. Other then that not really. The difference was seen at the track, which in my case equalled and surpassed the performance of removing the cats.
number that were substantial or no?
Old Jul 24, 2007 | 05:48 PM
  #7  
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Default RE: Underdrive Pullys

^^^ no drawbacks...I didn't do a before and after dyno pull...wish I had, since I really couldn't tell anything seat-of-the-pants...oh well maybe I have helen keller's a$$ lol...
Old Jul 24, 2007 | 05:52 PM
  #8  
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Default RE: Underdrive Pullys

I plan on doing a dyno after I get mine installed so I'll let you know. Would have been this week while the shop is doing my gauges and such but good old FedEx put it on me![:@] Maybe I'll get them tomorrow!
Old Jul 24, 2007 | 05:53 PM
  #9  
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Default RE: Underdrive Pullys

Thanks guys, i just really want to supercharge my car (-:
Old Jul 24, 2007 | 06:30 PM
  #10  
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Default RE: Underdrive Pullys

Well, the difference is that the engine revs faster. When people go by "seat of the pants" you really need a substantial gain in order to actually feel it. The car feels stronger, feels like it accelerates faster, but that's essentially what the pulleys are intended to do.

I ran 13.2s with an 93 Oct Tune, C&L Intake, and an O/R H. All street trim including spare, jack, and shaker 1000.

Removed the O/R H and I was managing 13.4s. This to me tells me the O/R H was worth .2 in the 1/4.

Installed the pulleys and I am now at my current time of 13.0. I'm sure my driving style has changed with experience, but with that said I still think the pulleys are a great buy. I haven't noticed any elecritcal problems due to the pulleys (slows down accessories, hence how it makes power.) A/C still gets cold on startup, and stays cold... Have noticed absolutely zero negatives about the product. I have the Steeda pulleys, not sure that it matters... You can usually get them on sale for around $200. They go on sale frequently as well.



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