Quote:
Originally Posted by Espi
If you're running an un-catted header, then yes getting a catted header will quiet things up significantly. I have a very similar design exhaust -Greddy Supreme SP but with catted UEL header installed 2 weeks ago.
Ironically, I have to take my wife's Mazda3 in for service in a few hours. So I was able to hear it just a moment ago driving away. Lovely quiet tone driving away. I will admit between 1k-3K mine is also a little boomy in the cabin when driving but I love it lol.
Also, a good tune will change the exhaust note a little if/once your tuned.
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Thanks mate. Just stock other than the cat back. Wasn’t planning on a tune at this stage at least.