hey guys those of you with the AF/X underdrive pulley or any other light weightunderdrive. did you have a problem with your battery? what about the altenator? did the pulley wear out on the altenator. my battery light came on today. both my battery and altenator are not even a year old yet. well i havent had them on my car a year yet. do i need to get a battery with more cranking amps with this pulley?

tahnks for any input

jason

Nope, no problems so far with my AFX UDP. Its been like a month, and my battery seems to be ok still. I have no idea about my alternator though. Yeah, I was also wondering if the UDP would have any effect on charging the battery and alternator, since the diameter is way smaller than the stock one. That's what me and my dad have been worrying about. But there has been one symptom that I have been noticing. Its my system. Everytime I turn it up too loud with the bass, the whole system dies, then turns on again, dies, until I turn down the bass a lil bit. Its like I'm running low on energy that I'm supplying my system. Well, I heard other side effects of putting an UDP were breaking the belts easily. Well, that's about it...

SonicYan aka Mikey
1997 Eclipse RS
Pinoy Reppin' SoCal 2GNT
Best: 16.35 @ 83.05 MPH

if your alternator belt is loose, it can make the alternator not spin enough to charge the battery while teh engine is running.

you would probably experience a squeel as well. have your battery tested at an autoshop. autozone has done mine for free.....

03 srt-4 13.130@112.47mph (n2o, stock turbo, 10/2003)
now: 20g, portfueler, bpu+++ (track/dyno times tbd...)

i farted on your wiki

well i have noticed a sort of squeel. but i havent checked my belt yet. i have been meaning ot do that. i also have a little bit of a system. im thinking that i might need to get a higher amp battery or just take out the system. which im not really into the major audio like i used to be so i might take it out and see how that does. i am going ot have my battery tested i hope today. i iwll let you guys know how it went and my thoughts on it. later


jason

I notice a slight dimming of lights and can hear the heater fan slow a little bit when i am at idle, with or without my system on. I have a brand new alternator and a Optima yellow top battery. Since the alternator will be turning 30% slower, you might have probs at idle like me. It doesn't kill the car or anything, but i will try to keep up the rpm's a litte when at a long light, and that works just fine. It seems like anything under 1000 or 1100 rpm's i notice the dimming. This will be harder on your alternator since its trying to put out gobs of amps at a very slow alternator rpm.This can kill an alternator faily quickly, so be careful. If your going to be at idle for more than a few minutes, keep up the rpm's several hundred rpms to help put less stress on the alt...

13.5 @108 MPH-2.2 60ft(stupid FWD!)
S16G @ 18 PSI/FMIC/Running on MegaSquirt II (Now with sequential
fuel injection)
My webpage: http://eclipsed4evr.home.comcast.net
-1998 Mitsubishi Eclipse RS-T- "Toy"
-1992 Plymouth Laser Turbo AWD(SOLD)
-2000 Honda CR-V(daily)

I have a system and experience no problems except the dimming of the lights, but sonicyan yours may be because of your amp. your amp has circutry that prevents it from over exerting itself. i have a rockford amp that was doing that to me u just have to find the limit of the amp and try to make it sound good there. but it shouldn't be the udp

I edited to the wiki!

this might sound stupid but um do they make another kind of altenator that might not be affected by something like this?

jason

buy a capacitor for your system... their purpose is to prevent dimming lights!

Tim
trwebb26@yahoo.com
White 1999 GS - Manual Tranny
Mods: B&M Shifter, Symbroski Shifter Kit, RRE SS Clutch Line, AEM Short Ram Intake, Clear Side Markers, GS

I have a voltmeter in my car even at idle alternator voltage never drops below 12 volt, usually around 12.5. Under load it produces the full 14 volts, don't worry about it at all.

"The fastest draw is when the sword never leaves the scabbard,
The strongest way to block, is never to provoke a blow,
And the cleanest cut is the one withheld."



Michael J. Kulaga
e-mail: Michael_97RS@2gntDSM.zzn.com aol IM: MJKulga
http://highlander.dsmpower.com/

Injen CAI, 55mm TB, Hooker 4-1 Stepped Header, GS-T Muffler, AFX UDP, S-AFC, 8.5mm Magnecor Wires, SS Clutch Line, NRG Susp. Motor Mount Ins., FU/RU/RL STBs, TSW Blade 17x7.5, Bridgestone Potenza RE730 215/45ZR-17. Front KVR Cross-Drilled Rotors and Carbon Fiber Pads

To Be Installed: Ported/Polished Intake Manifold 1/2, Rear disc brake conversion kit, SS Brake Lines, Rear KVR Cross Drilled Rotors and KVR Carbon Fiber Kevlar Pads, Crane Ignition Amp

Firefly:
Mal: You don't know me, son, so let me put this to you plainly: If I ever kill you, you'll be awake. You'll be facing me. And you'll be armed.