Underdrive Pully Question

2much4u · August 22nd, 2006, 05:57 PM

about how much horsepower can a Underdrive pully give you? What does it exactly do?

SWEET2KSTANG · November 12th, 2006, 04:58 AM

udp reduce rotating mass off the crank. a smaller crank pulley is easier to turn and the other pulleys are larger to make up for the differnce. the steeda pulleys say up to 12hp. i noticed a differnce with mine and they dont create any driving problems at all.

C MY 4D · November 12th, 2006, 05:02 AM

I saw absolutely no gains with the UDs at the track. all it did was make my lights dim while sitting at a light. In my opinion if its a DD they aren't worth it.

ChrisJ · November 12th, 2006, 05:41 AM

They worked fine on mine...

You notice alittle bit but not really anything extreme...I put them on at the same time with the x-pipe so I really dont know what they added by themselves...

I never had issues with my lights dimming...

matrixpuba · November 12th, 2006, 08:35 AM

Originally Posted by C MY 4D

I saw absolutely no gains with the UDs at the track. all it did was make my lights dim while sitting at a light. In my opinion if its a DD they aren't worth it.

they had that problem with the fox cars. on the sn cars, they dont due that.

ChrisJ · November 12th, 2006, 08:37 AM

Originally Posted by matrixpuba

Originally Posted by C MY 4D

I saw absolutely no gains with the UDs at the track. all it did was make my lights dim while sitting at a light. In my opinion if its a DD they aren't worth it.

they had that problem with the fox cars. on the sn cars, they dont due that.

C MY 4D used to have an 01 GT...I think that is what he was talking about...

matrixpuba · November 12th, 2006, 11:37 AM

the fox cars had charging problems with udp. on the modular cars with the bigger alternator, they dont have charging or power steering problems.

C MY 4D · November 12th, 2006, 11:57 AM

not true...... i had problems on my 01 and i had problems on my fox with a 3g

matrixpuba · November 12th, 2006, 12:17 PM

never seen a modular car with a charging problems with udp. nor have i ever heard anyone complaining of it.

handyandy · November 12th, 2006, 04:10 PM

I have Steeda UDP, I felt no difference, and I also have an 2001 GT with NO problems at all, lights and mach 460 stereo are all powered just as good.

niubodybuilder05 · November 12th, 2006, 04:56 PM

How is the gas milage and so forth with your 4:10's on that 5 speed. Is it your dd.

handyandy · November 12th, 2006, 06:26 PM

If you are talking to me, yea Its my DD, and the mileage i guess isn't THAT bad in comparison to stock. It still gets 25-27 on the highway at 2500 rpm @ 70 mph. City driving isn't very good at all though. I don't know what a stock stang gets since I haven't owned a stock geared stang, this is my first one, and it already had gears in it, but I'm getting about 15 mpg around town, lots of stops and gos. I like em though. I deal with it.

August 22nd, 2006, 05:57 PM	#1
2much4u Newbie Join Date: Jul 2006 Location: Oceanside, CA Posts: 44 iTrader: 0 reviews	Underdrive Pully Question about how much horsepower can a Underdrive pully give you? What does it exactly do? __________________ 2003 PONY GT V8

November 12th, 2006, 04:58 AM	#2
SWEET2KSTANG mm's nitrous mod 2000 mustang gt 11.79@115.83 (old set up) Join Date: Oct 2006 Location: N.W. AR Posts: 12,540 iTrader: 8 reviews	udp reduce rotating mass off the crank. a smaller crank pulley is easier to turn and the other pulleys are larger to make up for the differnce. the steeda pulleys say up to 12hp. i noticed a differnce with mine and they dont create any driving problems at all. __________________ project warhorse under construction wagon burner under construction as well (04 lightning) being built by MP2 Performance

November 12th, 2006, 05:02 AM	#3
C MY 4D Billy Weston 2003 Cobra 11.14@124.36 Join Date: Aug 2006 Location: Hampton, VA Posts: 4,806 iTrader: 8 reviews	I saw absolutely no gains with the UDs at the track. all it did was make my lights dim while sitting at a light. In my opinion if its a DD they aren't worth it. __________________ TT Build in progress....... Need work done to your car for a great price in Hampton Roads? Shoot me a PM.

November 12th, 2006, 05:41 AM	#4
ChrisJ RLY SRS Join Date: Aug 2005 Location: Ft. Meade, MD Posts: 38,220 Blog Entries: 4 iTrader: 10 reviews	They worked fine on mine... You notice alittle bit but not really anything extreme...I put them on at the same time with the x-pipe so I really dont know what they added by themselves... I never had issues with my lights dimming... __________________ 2008 Acura TL Type-S - 2008 EB Ford Expedition - 2002 Boosted GT - Sold Facebook Google+

November 12th, 2006, 11:37 AM	#7
matrixpuba Hardcore Enthusiast Join Date: Sep 2006 Location: tennessee Posts: 2,364 iTrader: 0 reviews	the fox cars had charging problems with udp. on the modular cars with the bigger alternator, they dont have charging or power steering problems. __________________

November 12th, 2006, 11:57 AM	#8
C MY 4D Billy Weston 2003 Cobra 11.14@124.36 Join Date: Aug 2006 Location: Hampton, VA Posts: 4,806 iTrader: 8 reviews	not true...... i had problems on my 01 and i had problems on my fox with a 3g __________________ TT Build in progress....... Need work done to your car for a great price in Hampton Roads? Shoot me a PM.

November 12th, 2006, 12:17 PM	#9
matrixpuba Hardcore Enthusiast Join Date: Sep 2006 Location: tennessee Posts: 2,364 iTrader: 0 reviews	never seen a modular car with a charging problems with udp. nor have i ever heard anyone complaining of it. __________________

November 12th, 2006, 04:10 PM	#10
handyandy Regular Join Date: Oct 2006 Posts: 105 iTrader: 0 reviews	I have Steeda UDP, I felt no difference, and I also have an 2001 GT with NO problems at all, lights and mach 460 stereo are all powered just as good. __________________ 2001 Mineral Grey GT - 5 Speed -full bolt-ons, 4.10's

November 12th, 2006, 04:56 PM	#11
niubodybuilder05 Regular Join Date: Sep 2006 Posts: 83 iTrader: 0 reviews	How is the gas milage and so forth with your 4:10's on that 5 speed. Is it your dd.

November 12th, 2006, 06:26 PM	#12
handyandy Regular Join Date: Oct 2006 Posts: 105 iTrader: 0 reviews	If you are talking to me, yea Its my DD, and the mileage i guess isn't THAT bad in comparison to stock. It still gets 25-27 on the highway at 2500 rpm @ 70 mph. City driving isn't very good at all though. I don't know what a stock stang gets since I haven't owned a stock geared stang, this is my first one, and it already had gears in it, but I'm getting about 15 mpg around town, lots of stops and gos. I like em though. I deal with it. __________________ 2001 Mineral Grey GT - 5 Speed -full bolt-ons, 4.10's

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