Stanv03
Well-Known Member
- Thread starter
- #1
Hello everyone I am back , so I got the Roush cat back for my non pp 2020 mustang GT for Black Friday last year. It sounds really good in my opinion and I love stepping on it just to hear it scream, I’m constantly using my paddle shifters because in low rpms it seems to be a bit quiet, sometimes I feel like it’s not loud enough. I want to get more sound out of it. I wanted to see if I can make it louder without touching headers or having to change exhaust, I would like headers but I live in GA and do emissions once a year and wouldn’t want to fail it. I’ve seen online that even the kooks green catted headers still fail emission And it’s also super expensive for me right now. Would changing my x pipe to a corsa double x pipe or even an h pipe make it louder? Or maybe even the borla switch fire? TIA 
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