I first put my blower on about a year and a half ago, and when i did the whine from it was LOUD! And I loved it. While putting the engine back together a friend didn't put 2 spark plug wires on all the way and shortly after the rings in those 2 cylinders blew. I needed to replace the bottom end with with stronger pistons, rods, and rings anyway so it really wasn't that bad. Fast forward a little over a year and i have everything done and put the it all back together and the whine is NO WHERE near as loud as it was. Before, when the engine was idling you could hear the whine over the engine. Now, the only time you can really hear it is when the car is decelerating from a high RPM. Its the same blower and same belt. Does anyone have any idea why this would happen?