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Hi all,

I had the magnaflow muffler swap completed about a month ago. Love the sound (except for the drone around 1700-1900rpm), however the reason for this post is that I'm wondering if its normal to hear a strange clicking/tapping sound on hard acceleration (heard easiest when near walls to get the sound reflection). The sound is best described as a playing card on the spoke of a bicycle. Not sure if this was normal for this swap or if there's something wrong with the muffler that was installed.

I have a 2014 PRO-4X, magnaflow swap, Airraid intake, Bullydog: 2* advance running 87 tune.

Hope someone can share some insight. Thank you much!
 

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I have had that on my 07 with JBA muffler. It's been a while since I have heard anything about it though. I believe it was a very common issue with no real fix.
 

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Very common, at least it is with the 18" Magnaflow swapped in for the OEM. The "card in spokes" is exactly how we've described it. A.K.A. CIS.
 
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Ahh...I could never figure out "CIS" in all the posts haha. Thanks for the feedback guys! Much appreciated! I was gonna head back to the muffler shop to complain I had a defective muffler lol. You've saved me a trip!
 

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I just got did a muffler swap with the Borla 40348. I like it so far, although I've not had it long. I'd consider something like that over the Magnaflow.
 
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