I am replacing a flowmaster ( wich i hate ) with a new exhaust. I have a 08 denali and i love the sound of tha factory exhaust sound, but for a bagged truck the factory muffler is just too big. What muffler can i replace the flowmaster to give a quieter cabin and just a good sound rather than sounding like a 1985 chevy that has a 350 with a hole in the muffler ?

 

GMPP Muffler 19131346 is pretty quiet, just a tad louder than stock, sounds pretty good dumped also. How much do you have to work with? Mine is just above the frame rail.

 

Is this a borla muffler ? google search results show a borla muffler ?

 

I went from a Flowmaster 40 series 3" SI/SO to this Magnaflow that has a 14" case, and is also a 3" SI/SO. I am more than happy with the Magnaflow.

 

Yes, its a Borla muffler that is made for the GM Performance Parts cat back kits, It has a GM Performance Logo on it but its wayyyyy cheaper than buying a Borla muffler.