How good does Glasspacks do on a 3rd Gen. Mine is a 87' IROC. Can you do duel glasspacks.

 

i was wondering the same i have a flowmaster and its just not loud enough couldnt tell ya honestly

 

IMO glass packs sound like crap. I'm using Flowmaster American Thunder system and it's fairly loud. I have stock manifolds and a hollow cat. When I finally get around to installing some headers I'm sure it will become annoyingly loud.

 

get chambered mufflers. Cant figure out exactly how the hell they work but i think all it is is a pipe with dents in it to cancel out sound frequencies. They came on my car when i bought them and it sounds amazing. Check out www.stainlessworks.net from what i hear they make some of the best chambered mufflers

 

I have a dual setup, not a TRUE Dual, but a dual setup. The mufflers on my setup are simular to glass packs but the sound is nice, deep and loud when at WOT.
Pictures of the old (dirty setup) is at My Site .
I just got it redone from the cats but haven't gotten time to update the site, but that cost me $350.00.

 

i dont like my flowmaster american thunder to soft not loud enough

 

Just do a system like the SLP loudmouth.

 

how is slps compared to flowmaster in performance gains and sound. more specifically the american thunder versus the loudmouth.

 

Loudmouth is louder rougher and less refined....Flowmaster has a smoother sound that I prefer, but to each his own I don't want everyone to have a car that sounds like mine anyway.