what will give me better sound and power, headers or h pipe with cats?

 

Better sound and performance than what? Depending on your year, most Stangs have factory short tube headers and an H pipe with cats. Long tube headers will most likely give you better performance. An H pipe with Cats may not give you added performance nor better sound. An H pipe without cats will give you a really aggressive sound and will flow better because of the elimination of the cats. Of course that is illegal for street use in most areas. </P>

 

If you have to choose between either or...I would upgrade the h-pipe and cats...</P>


You may upgrade the headers, which themself will flow better but the gasses won't be passing your stockcats and h-pipe any quicker...</P>

 

Change the H-pipe, because you'll benefit more fromremoving the factory one. I'd also change the headers eventually if I were you, but not before doing the mid-pipe, &amp; cat-back, cuzwhat DAN02GT said is true.</P>


Gixxer</P>