I have a L67 supercharged and installed an 6mm insulator and put new oil in the supercharger. When I started it up, it started making a weird sound from the supercharger.I was wondering if you know anything about this?

The supercharger may have been over tightened when it was bolted down, resulting in the supercharger rotors clipping the housing. Please loosen the bolts a little to see if this helps. We normally aim to have the supercharger bolts torqued down to 13-15nm in 1-2nm increments. If the problem still persists, please call us.