ok obviously im looking to know wat is the loudest magnaflow muffler. I have a 2001 5.3L sierra. i have a 40 series flowmaster one 2.5in in and dual 3in out. i was thinking about getting a dual 3in in and dual 3in out muffler. which ones are louder the long body mufflers or the shorter body mufflers?

thanks

 

i'd guess the shorter one

 

I have this one:



Its not all that loud and i have gutted cats.. @ WOT about 6k rpms it sounds sweet!

 

LOUDESt magnaflow by far

2.5 inch in/out
http://www.magnaflow.com/02product/s...ne=main&id=498

3 inch in/out
http://www.magnaflow.com/02product/s...ne=main&id=849



also if you want a oval muffler the 4x9x20 is loudest they have
http://www.magnaflow.com/02product/s...ne=main&id=843


then you have the race muffler 3.5 in/out this is very loud also only 6 inches long
http://www.magnaflow.com/02product/s...ne=main&id=571

i have a dual in/out magnaflow with internal x pipe and long tubes on my truck and its so freakin loud.

if you want to do the dual set up get this muffler it has the internal x pipe also and will be loud
http://www.magnaflow.com/02product/s...ne=main&id=625