UD Pulleys

Im planning on buying and new ud pulley system, to go along with my C&L CIA w/ Perdator Tuner, and i was wondering how much one of these should cost. I also wanted to know if it will cause any problems at idle, which ive heard that they can do. If anyone has installed this part already, how much hp and torque did you pick up and is it worth buying?

Thanks
 
never used on the newer cars, but have used on many others. If you buy high quality pulleys, like steeda or march, you should have no trouble if they are installed correctly. just check ebay, they should all be less than like 180, and that is a little steep
 
I really noticed an improvement with the STEEDA UD pullies.

A real PITA to install, but worth it IMO.

Since I had also installed a JMS chip CAI & custom tune, there is no telling what HP the UD pullies provided.

As for the idle... no problems what so ever.