Bullet vs. glasspack --what's the diff?
 

As the title says, I'm wondering what the real difference is between a bullet and a glasspack. I've heard that glasspacks actually produce less HP than stock. Is that true?

Glasspacks sound like sh!t and the bullets sound really agressive. Other than that I don't really know. Glasspacks are a little cheaper, but I honestly think they sound like complete sh!t compared to pretty much anything else

Glasspacks have louvers inside. And the older ones necked down real small to a 1.75" core so thats why they didnt flow very good. The new ones might not do that, I dunno. As cheap as they are if youre that curious why not try them?