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I am considering getting an Underdrive Pulley set. I had heard that you will get a good increase in power, but also, you will have problems running electrical accessories at idle.

Anyone who has UDP's, do you have any issues at idle? I already have some issues of my lights flickering at idle now, so I was wondering if that is a problem with UDP.
 

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I have the FC udp and have not had a problem yet with electrical equipment.

-Geoff
 

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i have some probleme at idle with the OEM UDP but a drive 2 Alpine Typer-R 12" and 12 V12 800 WATT RMS but but i you dont drive sommething like this you will probably not have probleme

***** SORRY FOR MY ENGLISH ****** i know its very bad ;P
 

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I JUST got my UDP kit on this weekend, but here's what I've noticed. At idle, I'll get two VERY small flickers from the headlights. That's it. Hardly noticeable. Stock stereo works fine, no other problems.
 

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Yes, your electrical system is being underdriven at idle, causing the lights to dim. I've got a Black Diamond Racing UDP on my 1995 Escort, and am AF/X UDP on my ZX3, and I have encountered this "so-called problem". It doesn't cause any harm. I've had my UDP on for more than a year now.
 

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I've got the UDP's and run 3 amps which can suck about 160amps (full draw ~ competitions maybe) and about 10-30 normally, with peaks probably around 50-80... and i'm doing fine.

Or in laymans terms... about 1800 watts or so?

(I hooked up 2 farads of capacitance, tho. and run an optima red top...)
 

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i had a udp on my ZX2 for a year and on my ZX3 for 6 months (befor FI) and had no problems at all with flickering lights, etc.
 

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I have to agree with Michaelxi the AFX is a terrific product. When I sit at a light my lights dim and when my sub goes boom all the lights flicker a bit. but overall its a great investment, one I'm very happy with.
 

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ive had my pulley on for 2 years

Been through like 4 systems, runing a 5channel class T alpine amp right now, about 1800 max watts...2 12"s very high end components and a TV, and guages, no problems yet

The lights do dim if you bump it hard, only when the bass hits, and its minor, thats it...stock idle also guys, so you wont have any problems...

Get a cap and it will solve the light dim

Im also setting my rev a bit higher when i put the turbo in so it wont matter, at 1000rpm idle, it will charge just fine, but still works plenty fine on stock idle
 

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You should be just fine with the AFX UDP..I had way more system then the Mach comes with and didnt get any flickering at all untill maximum bass was pumped and its rare your ever bumping that loud all day long...
 

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CopperMach,

Yesterday I got my AFX UDP installed by S. on da 5 (Howard) and i've had NO problems whatsoever.

Engine idle is normal and there is no dimmming of the interior or exterior lights. My Hids ignite powerfully and stereo runs fine (1000w amp, alpine component speakers, mtx thunder8000 10" sub, factory headunit).

I have no dyno results, but drivability has improved somewhat at higher speeds, like driving on the freeway at 60-80mph, as well as acceleration from light to light. This may vary according to your mods or transmission but im not sure either.

Get the AFX UDP


-Chris

[ 11-07-2002, 04:21 AM: Message edited by: chris_k ]
 

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Got-to agree with all above. I have the AFX UDP as well, and no probs. Yeah, a little dim at idle, but who cares in the end at idle. I am also running a 500W D-Class Amp with some other gadgets in the trunk.....and no dim upon thump.
 

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2 1/2 years and 30+ thousand miles and counting on our Esslinger UDP.

Only a slight interior light flicker at idle, no dimming of any kind, other then that.



- Drew

[ 11-06-2002, 07:32 PM: Message edited by: focusownerskid ]
 

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1 Season with the Esslinger UDP.

Didn't really gain anything but the engine spins up faster which is what I wanted. Even with my red top I was getting some considerable dimming of the lights sometimes leading to clipping. I added a cap and that solved the problem for a while. When I was showing my car in Montreal at the Indy I had to keep the car running and give it a little gas to stop it clipping after 3 or 4 demo songs, but we had everything turned up just about as loud as it would go.

Overall I'm 100% happy with it.
 

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AF/X UDP here.
I see the SLIGHTEST flicker at idle, but nothing REMOTELY problematic. How bright do the lights need to be when you're not moving anyway?
I'm VERY happy w/ the performance of mine. I'm approaching 1 year of use.
 

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I must say, while I respect massive car Audio, WTF good is it on a regular basis????
I'd rather dump the cash into the home audio, and have a decent system in the car.
I am an Audio Engineer, and w/ my Bosal Exhaust, most of the time, I'd rather kill the tunes, roll down the window, and listen to the car instead of audio at a level that will dim the lights while causing ear damage.
Hell, who really needs to throw a "Block Party" from their Hatch?????
Don't get me wrong, I LOVE LOUD CLEAN Audio at a level that will almost drive the typical person out of the car, BUT, when it exceeds that, it's a waste of money. The Neighborhood doesn't give a DAMN what you're listening to, and it's THOSE idiots who piss me off when I'm actually trying to catch some ZZZZ's and feel like I've fallen asleep in the Ghetto w/ the "Wanna-G's"....
:-/

[ 11-07-2002, 03:52 AM: Message edited by: MichaelXi ]
 

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Originally posted by focusownerskid:
2 1/2 years and 30+ thousand miles and counting on our Esslinger UDP.

Only a slight interior light flicker at idle, no dimming of any kind, other then that.



- Drew
<font size="2" face="Verdana, Arial">Same here.
 

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Originally posted by MichaelXi:
I must say, while I respect massive car Audio, WTF good is it on a regular basis????
I'd rather dump the cash into the home audio, and have a decent system in the car.
I am an Audio Engineer, and w/ my Bosal Exhaust, most of the time, I'd rather kill the tunes, roll down the window, and listen to the car instead of audio at a level that will dim the lights while causing ear damage.
Hell, who really needs to throw a "Block Party" from their Hatch?????
Don't get me wrong, I LOVE LOUD CLEAN Audio at a level that will almost drive the typical person out of the car, BUT, when it exceeds that, it's a waste of money. The Neighborhood doesn't give a DAMN what you're listening to, and it's THOSE idiots who piss me off when I'm actually trying to catch some ZZZZ's and feel like I've fallen asleep in the Ghetto w/ the "Wanna-G's"....
:-/
<font size="2" face="Verdana, Arial">Ok to preface my post. The only reason I have the amount of audio in my car that I do is because I am sponsored by Clarion so I got it all for free. Personally I hate it. It weighs far to much and it's a pain to keep taking out of the car when I run track days. I'm never the person driving around with their stereo cranked up to 45. Those people tend to be trying to attract attention to themselves, come you have seen my car do I really need to do that? When I have my audio turned up it's for show demo only nobody is aloud within 2 ft of the car and any changes are made with a remote. Personaly I like the ability to hear, and walking around with a ringing sound in my ears for a week isn't much fun. I didn't want to drag this post off topic like this I was just adding my own personal experience.

[ 11-07-2002, 07:44 AM: Message edited by: Euro Ford Fan ]
 
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