MBRP 4" turbo back to 6" stack is what I run. Straight pipe. I love the sound of it. Some people say it drones but I like the range of sound. To each their own really.
Go with flo-pro because they are Canadian made versus Chinese crap. Plus they come with band clamps for the exhaust joints versus the crush clamps all the other kits come with... Its a no brainer.
Mine came with a 4" MBRP no cat no muffler and I like it but a buddy of mine has a 5" and you can really hear the difference. I'm going 5" when I get the chance.
I just did the MBRP 4" turbo back (muffler and stock cat) I live in california so I have to smog it in July. I went with aluminized because we have 300+ days of sunshine. Sounds awesome with no drone, which was my goal. Bought it on Amazon for less than 300 shipped. Good luck bud
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