to follow-up on Woody's post.... the throttle body attaches to the supercharger via a 'gasket' that is two mounting plates with a rubber section molded to them. One plate mounts to the SC and one to the TB. That rubber gasket can split at one of the joints to the metal and cause a leak.... the amount of leak depends on how big the split is.... I have had this happen twice on my Aero.... or it just might need to be re-torqued...or...or....

Let us know if you have any more info... good luck...