I just install a magnaflow race series muffler and its sound , very deep but not very loud, do u think whit a test pipes this will increase the sound ?

 

or headers. but magnaflow isn't a loud exhaust. it gives off a great clean sound without being ricey or too loud (note there is a difference between loud and ricey).

If you want loud a test pipe would help but headers intake and testpipe together = really loud

 

I have a magnaflow muffler and RRM test pipe, RRM SRI, plus I cut out my resonator and it is quite loud

 

i just installed a test pipe with my magnaflow exhaust. it still has that clean deep sound but the test pipe makes it a little whinier and a bit more high pitched. i don't like my car being that loud, but its just perfect.