Quote:
Originally Posted by EmanAkbarpour
I have been trying to decide on an exhaust setup for a while now for my 09' 328i n51. I have seen a few muffler options like AA, manga flow, BMW PE, and the 135i muffler. But I don't know which one sounds best.
I am looking for a decently loud deep tone.
I'm considering adding a different muffler, vibrant resonator, 2nd cat delete, and catless headers.
Any thoughts and recommendations would be greatly appreciated! 
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I have the exact car as you and I just did a muffler delete- it sounds pretty deep and more mellow compared to my friends muffler+resonator delete car. Muffler+resonator makes it sound more high pitched in my opinion. I like the sound of the muffler delete and its pretty inexpensive just to get it professionally done.