I was wondering if anyone is running those AEM or OBX pulleys. I guess they are oversized or something like that. I've seen and heard about those a long time ago, but never really cared for them.

as far as the OBX goes i don't know how much i would trust their products since they have the same part # listed for the 4G63 and 420A underdrive crank pulley. so they might also have the wrong accesory pulleys listed also.

my car will sound like, bumbabumbubavrooooooooooooooomrooooooooahhhhhhhhhhhhh, kishhhhhh
www.dsmregistry.com/detail.php?carid=643
VW= The joy of driving
DSM= The frustration of fixing

I would stay away from any important engine parts by OBX. I don't know that anyone makes a full UDP set for the 420A. :shrug If anything, I'm sure it'd be around $300 or so for the complete set from like Unorthodox or something. :P

well UR does NOT make a full pulley set, and really their is no need for a full pulley set. If you underdrive your accesories via your crank pulley and underdrive them via acc pulleys you are negating your gains. If you overdrive your acc pulleys while underdriving your crank then you are looking at a very dead battery. Be happy with the UDP and if you want try to look into just getting the other pulleys lightened...

my car will sound like, bumbabumbubavrooooooooooooooomrooooooooahhhhhhhhhhhhh, kishhhhhh
www.dsmregistry.com/detail.php?carid=643
VW= The joy of driving
DSM= The frustration of fixing

is it for a turbo or non-turbo car? if its the 420a, howellautmoitve has a af/x underdrive pulley for $140 (now on sale for 120) and the alternator belt is $13, what other belts would u need (i kno it holds ure alternator, a/c, power steering, but do u need a new belt for all or just the alternator?)

What i wish someone would produce would be lightened STOCK size pulleys to use with the UDP. They exist for other cars, but not ours. Seems like it would free up some rotational weight and give the car an added boost.

Originally posted by miamilakeseclipse
is it for a turbo or non-turbo car? if its the 420a, howellautmoitve has a af/x underdrive pulley for $140 (now on sale for 120) and the alternator belt is $13, what other belts would u need (i kno it holds ure alternator, a/c, power steering, but do u need a new belt for all or just the alternator?)

R u sure its on sale for $120??? Doesn't say it on the site is y I'm wondering....