Want loud exhaust ...

[Stephen@lethal]

Borla systems sound pretty great on s550s imo, I would definitely recommend going with them, if you're trying to go louder for sure, I would recommend a header setup as well. Hit me up and I can take care of you. Lethalperformance.com

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[Shewantsthe5oh]

Roushs and X pipe had it on both of my mustangs but my 2014 had long tubes as well.

 

[Chad1986]

Catless long tubes to a 3 inch x pipe and straight pipe from there. It will wake the dead trust me Lol. That's my setup

 

[Jmtoast]

Headers or catless is pretty obvious. Xpipe is louder but it’s minimal. People make too much of the difference.

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