The Glasspack was created in 1999.

cherrybomb

Glasspack vs Blackstone - 2013 was released on:

USA: March 2013 (Dallas, Texas)

yes

If your Glasspack is a tip and it has a silencer in it, take it out You'll get more flow too. If it is just an inline one replace it with a one with less fiberglass packing (cheaper ones tend to have less fiberglass packing) or just removing the glasspack all together and go straight pipe. Glasspacks also get louder as they wear out. Get your glasspack hot and spray it with cold water. On the outside.