Whats Louder

The Best V8 Stories One Small Block at Time

ive heard no muffler, loudmouth, x pipe with flowmasters, and gmmg
on otherwise stock trans ams going WOT
they all sound great at idle,
(esp no muffler)
but when you open em up,
the gmmg keeps the deep sound
the rest trade it for a roar
im surprised there are other catbacks even mentioned here on ls1tech
its probably because some people bought theirs before hearing the gmmg


