I second the Spintech Mufflers. I went with mine thanks to Tallsville's recommendation. I've read some very well written reviews on some mustang and other race forums where they compared the CFM of flow of several brands. Spintech was better than most other brands, except they also provided a reduction in sound. I don't think there's any brand of muffler that flows as much as the Spintech, unless you get a glass pack that you can literally see right through.
The sound is deep during light acceleration, extremely quiet at idle, and kind of like a race car at full rpm. There's no drone on the highway either. I opted for a dual inlet and single 3" outlet setup. It's much better than the horrible factory Y pipe.
The sound is deep during light acceleration, extremely quiet at idle, and kind of like a race car at full rpm. There's no drone on the highway either. I opted for a dual inlet and single 3" outlet setup. It's much better than the horrible factory Y pipe.
