Interesting Article about UDP
10-02-2001, 09:15 AM
#1
Interesting Article about UDP
Hey guys! Has anyone seen the October 2001 issue of Sport Compact Car Magazine? They did a Part II article about their Project Ford Focus ZX3. This month they installed a UR Underdrive Pulley to their Focus. Now I'm not sure if this car is a 5sp or Auto but this was from the article:
"An underdrive puller is a standard, no-brainer upgrade. It doesn't matter what kind of engine you have, what else you have done to it, or what order you do the modifications in, an underdrive crank pulley will, almost without fail, be good for 3 - 5hp.
Now they ran a dyno on their Focus and here are the results:
2001 Focus with UR UDP, JBA Header, 1320 Exhaust, AEM Intake, Foccussport cam gears - 130 Horsepower, 130LB-Ft of Tourque
2001 Focus with JBA Header, 1320 Exhaust, AEM Intake, Foccussport cam gears - 127 Horsepower, 127LB-Ft of Tourque
Now I realize that this is not a 5th Gen Max and there are other factors involved with out cars but I found it interesting. Hope this helps clear up some mystery to the UDP.
"An underdrive puller is a standard, no-brainer upgrade. It doesn't matter what kind of engine you have, what else you have done to it, or what order you do the modifications in, an underdrive crank pulley will, almost without fail, be good for 3 - 5hp.
Now they ran a dyno on their Focus and here are the results:
2001 Focus with UR UDP, JBA Header, 1320 Exhaust, AEM Intake, Foccussport cam gears - 130 Horsepower, 130LB-Ft of Tourque
2001 Focus with JBA Header, 1320 Exhaust, AEM Intake, Foccussport cam gears - 127 Horsepower, 127LB-Ft of Tourque
Now I realize that this is not a 5th Gen Max and there are other factors involved with out cars but I found it interesting. Hope this helps clear up some mystery to the UDP.
10-02-2001, 11:52 AM
#2
Supporting Maxima.org Member
Join Date: Sep 2000
Posts: 2,038
Originally posted by yo_its_ok
Point being ?
this has been known for a while...that in theory it does free up HP, but in some personal testing done by others on Maxima.org they have lost hp ?
-Something to think about.
Point being ?
this has been known for a while...that in theory it does free up HP, but in some personal testing done by others on Maxima.org they have lost hp ?
-Something to think about.
But I never have determined if the dyno numbers were off or there was some other factor causing the result. All I know is that when I raced another 2k5spd that has the same mods minus udp and had previously dyno'd the same as me, the loss that showed up on the dyno didn't show up in the real world.
Who knows. Some of the 4th gen guys have had excellent results.
Unless you've already got an intake and y-pipe, I would bother.
10-02-2001, 02:51 PM
#3
Originally posted by yo_its_ok
LoL...I do notice that RPMs do climb quicker, but beyond that, I don't really see the ooomph behind it...with Hp Gains. If you have done every mod to free up breathing, then you feel it.(CAI, Ypipe, Cat, Mid Pipe and or full exhaust.)
I gained a few ponies from the UDP, time-wise didn't show, mph showed.
-Peace
LoL...I do notice that RPMs do climb quicker, but beyond that, I don't really see the ooomph behind it...with Hp Gains. If you have done every mod to free up breathing, then you feel it.(CAI, Ypipe, Cat, Mid Pipe and or full exhaust.)
I gained a few ponies from the UDP, time-wise didn't show, mph showed.
-Peace
10-02-2001, 03:27 PM
#4
Originally posted by yo_its_ok
LoL...I do notice that RPMs do climb quicker, but beyond that, I don't really see the ooomph behind it...with Hp Gains. If you have done every mod to free up breathing, then you feel it.(CAI, Ypipe, Cat, Mid Pipe and or full exhaust.)
I gained a few ponies from the UDP, time-wise didn't show, mph showed.
-Peace
LoL...I do notice that RPMs do climb quicker, but beyond that, I don't really see the ooomph behind it...with Hp Gains. If you have done every mod to free up breathing, then you feel it.(CAI, Ypipe, Cat, Mid Pipe and or full exhaust.)
I gained a few ponies from the UDP, time-wise didn't show, mph showed.
-Peace
Thanks again.
doublea
10-02-2001, 03:30 PM
#5
Originally posted by doublea
Since it is a mods I intend to do after intake and Y-pipe, how about the losse of light intensity and air conditioning,( suppose to occur cuz of smaller UD pulley size ) is this a bogus thing or what, I'd like to see what the Pro says about it.
Thanks again.
doublea
Since it is a mods I intend to do after intake and Y-pipe, how about the losse of light intensity and air conditioning,( suppose to occur cuz of smaller UD pulley size ) is this a bogus thing or what, I'd like to see what the Pro says about it.
Thanks again.
doublea
unless your running a 500+watt stereo system you won't see any probs.
10-02-2001, 05:51 PM
#6
In my experience, the UDP is a decent mod if you have already done the y-pipe and intake. The revs climb a bit faster, especially at lower rpms. It's nothing very dramatic, but it is noticeable. As for electrical issues, I have had none. No difference in electrical power or air conditioning at all.
10-05-2001, 03:08 PM
#8
Re: gains from less weight
Originally posted by theMax
UR states that this pulley gets most of its gains from a lower weight not from underdriving. This will cause little to no changein your accessories.
UR states that this pulley gets most of its gains from a lower weight not from underdriving. This will cause little to no changein your accessories.
10-05-2001, 03:30 PM
#9
Originally posted by yo_its_ok
LoL...I do notice that RPMs do climb quicker, but beyond that, I don't really see the ooomph behind it...with Hp Gains. If you have done every mod to free up breathing, then you feel it.(CAI, Ypipe, Cat, Mid Pipe and or full exhaust.)
I gained a few ponies from the UDP, time-wise didn't show, mph showed.
-Peace
LoL...I do notice that RPMs do climb quicker, but beyond that, I don't really see the ooomph behind it...with Hp Gains. If you have done every mod to free up breathing, then you feel it.(CAI, Ypipe, Cat, Mid Pipe and or full exhaust.)
I gained a few ponies from the UDP, time-wise didn't show, mph showed.
-Peace
by the way, whether i lost of gained any hps, i still beat an Accord V6 by 5 car lengths...is that good enough?
no disrespects to Accord owners...ahem...
10-05-2001, 03:51 PM
#10
Originally posted by irvine78
i don't really have the after UDP dyno figures...heck i don't even have my after GReddy or my fuel system dyno either...but i think i'll be dynoing my car pretty soon. so i guess i'll let you guys know..
by the way, whether i lost of gained any hps, i still beat an Accord V6 by 5 car lengths...is that good enough?
no disrespects to Accord owners...ahem...
i don't really have the after UDP dyno figures...heck i don't even have my after GReddy or my fuel system dyno either...but i think i'll be dynoing my car pretty soon. so i guess i'll let you guys know..
by the way, whether i lost of gained any hps, i still beat an Accord V6 by 5 car lengths...is that good enough?
no disrespects to Accord owners...ahem...
no it should be 7-9
10-05-2001, 04:11 PM
#12
Originally posted by irvine78
oops....let's not start a war....
there is a person from AV6 club here, you know...
oops....let's not start a war....
there is a person from AV6 club here, you know...
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