I had the Flowmaster 50 SUV installed on friday replacing the stock muffler and resonator as described above. 2.5 in/out offset just like UIN2IT did. had some stainless bent and welded in and it sounds just like the sound clip on youtube.
The soundclip is a great representation of the exterior sound, as for inside, there almost zero drone or resonance. at 60+ it is quiet. good rumble/burble at idle, low deep tone up to 2800rpm, then the engine really opens up.
i noticed right away that rpms raise much easier than they had stock. i did not reset the computer yet but may.
i have a tune, and am not sure if i should disconnect the battery or reflash with my tuner. Suggestions? Does disconnecting battery reset to your tune or to stock?
highly recommend this to people looking for conservative performance sound.