I got the original 40 welded on my 02 mustang and the only difference that I notice is that it pulls a little more on the top-end, and by a little I mean its almost not noticable, they defenetly dont rob hp unless its not properly installed. I love the sound doh, they are the best sounding mufflers out there in my opignion.
Get some gears if your for performance because the mufflers alone wont give you what your looking for.
Get some gears if your for performance because the mufflers alone wont give you what your looking for.