What is the internal difference in the muffler?

[svt 500]

I was just ask a question about this.... Do you guys think the frpp and stock mufflers are probably the same muffler, only difference is the oem has packing? I'm thinking of selling mine and want to give a correct answer.

 

[Draiter]

Here's an answer to one part of your question....

http://www.svtperformance.com/forums/showthread.php?977461-2013-GT500-Muffler-Internals&highlight=

 

[Kapy]

The FRPP's are totally different. I like mine until I go WOT. The stock mufflers definitely handle the exhaust note perfectly from all RPMs. But none the less I still like the FRPP's.