sdsubzero4
Spring Valley, CA
Yes, that is correct. It works the opposite of the Supercharger Pulley. Smaller crank pulley equals less boost. Larger crank pulley equals more boost. In fact, changing the crank pulley has a HUGE effect on boost.
Call Kenne Bell. They may have not thought you needed it with your kit.
I had a Steeda underdrive pulley on it. But put the stock pulley back on when the S/C went on. So, I should put the underdrive pulley back on and take the stock pulley off?