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Originally Posted by Black Knight
I was wondering about that too. What year is your car? I installed headers on my 02 and that removed the front cats that were built into the stock headers. Thinking of going with the Circuit Werks V2 option and their performance mid-pipe 200 cel cat option. That is if they ever come back in stock on the muffler set up. My question is did you just install the muffler or have you done the headers / mid-pipe and muffler.
The flow rates or additional back pressure of stock cats may or may not affect or contribute to the drone. Not sure. Just wondering
I also have noticed that some of the higher end set ups will have an x-pipe or some type of cross-over to perhaps try and reduce the drone by 'crossing out' the pulses.
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Sorry for late response, I have an 03s. I went with a borla muffler, and full catless, haven’t looked back and love the sound. The biggest surprise was power gains, no drone and no weird noises when it decelerates. I think since it’s a true dual exhaust it helps, but that’s just been my experience so far. There is some drone, but I mostly go top down anyway. I’d give it a look if you’re still exhaust shopping.
Also, I got the 200 cell pipes and when I ran it with the v2 muffler the drone was nauseating. I took it off after a week. Straight pipe was the way to go for me
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