Re: Anyone with a supercharger get the URD pulley?
Smaller pulley results in a smaller "torque arm" length, if you will. Thus it takes more force to turn the pulley, thus more parasitic drag on the engine. You would only "feel" this low in the RPM range, if you even feel it at all. Once the boost starts to come on you will really feel the added horsepower and the increase drag will be negligible. The "lag" or shift in power would only be noticeable if you are doing a lot of slow speed activities such as crawling or the like. I really wouldn't let the lag slow you down from purchasing it. I would totally put one on if my engine wasn't in the beginning stages of the warranty. I've only had the truck for a month now.
Hope this answers you question.
2007 Black Diamond 4x4 Upgrade Package #2
Last edited by DocME; 04-16-2008 at 09:24 AM.