Originally Posted by fadedSTi
no issues with mine. been almost a year. they do come with new belts.
Good stuff. Yeah, most reputable sets like the GFB, etc. should come with new belts. I think most AEM sets also come with new belts. Just watch out for the eBay types ones that do not.
I've also heard that a lightened crankshaft pulley may throw a CEL at high RPMs because it throws off the crank-position-sensor.
Here is some info on the Unorthodox set. I wish I could say I was familiar with it myself or at the very least knew someone who had it on their car.
Originally Posted by RallySportDirect
Unorthodox Racing Ultra Street Set pulleys. Come with a Crank Pulley, Alternator Pulley, and Power Steering pulley. Made of lightweight Premium 6061-T6 billet aluminum to ensure consistency of the material's strength and balance. CNC machined to .001". This is the complete Street pulley set that consist of the Ultra S crank pulley as well as all of the Ultra A accessory pulleys for each application. An average of 10 to 18 HP and 10 to 20 lbs.-ft. gains with these pulleys. Higher gains can be realized on modified engines. Power gains are obtained in two ways. First, and most important, is the weight loss. An average of 2.7 HP is gained from every pound lost off the crank shaft. With the lighter accessory pulleys, as much as 15% to 30% more power can be found. 85% of these gains are from weight loss. The rest of the gains are from underdriving, which accounts for about 15% of the total gains. Underdriving is not pushed for two main reasons. The main reason is to keep charging systems, air conditioning, power steering, and water pumps moving fast enough for every day driving. Second, not much horsepower is gained from extreme underdriving. Most of the underdriving is done with the crank pulley, not the accessory pulleys. This is done so maximize weight loss can be achieved at the crank where most of the horsepower gains are found. Available in natural polished aluminum as well as black, red, and blue anodizing.
*LINK*