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Old 10-28-2025, 01:14 PM   #16
SOCAL.M6.ZLE
Having FUN in the SUN...

 
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Drives: 2022 M6 ZL1 1LE
Join Date: Jan 2022
Location: San Diego CA
Posts: 2,190
Quote:
Originally Posted by Joshinator99 View Post
I used to use this center muffler and it worked very well. My shop had “customized” it to fit better and that new weld eventually cracked a few years later. So between that and the buzz was that it would “cost me power” at big levels, so I took it out. Guess what, that Magnaflow muffler did not cost me ANY power even at 1K WHP plus! I saw no gain taking it out. I’ve debated putting another one in and definitely would if I drove it in the street more. 2” headers with no cats is biblically loud, even with resonators and the AWE Touring mufflers. Don’t get me wrong, it sounds badass now, but on the street I’m a bit self-conscious about it. Massachusetts is not performance car friendly unfortunately.
Great feedback Josh! I didnt think it was costing me anything "power wise" but good to know your results...
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