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Question for Stillen Exhaust owners

I didnt really notice it until recently, maybe I always have my music too loud, who knows. But right when I turn the car off, theres a consistent thud I

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Old 02-25-2010, 03:47 PM   #1 (permalink)
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Default Question for Stillen Exhaust owners

I didnt really notice it until recently, maybe I always have my music too loud, who knows. But right when I turn the car off, theres a consistent thud I hear, not a metallic thud either, and it sounds like its coming from right around the resonator area, i've never had this happen with any exhaust setup in my life. Now, one would think "hey, its just the metal cooling off after being heated", and thats what I initially thought. It never happened with the stock exhaust on my car once. You can actually hear the thud from inside the cabin, and its even more prevalent when you peek down underneath the car. To describe the sound, it sounds like someone is flicking the pipe with their finger around every 8-10 seconds or so. Not sure if this is normal or not, has anyone else had the same experience? I personally torqued each bolt as tight as possible, so i guarantee theres zero chance of it having a leak or loose bolt.
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Old 02-25-2010, 04:13 PM   #2 (permalink)
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does the same thing on mine.

i am no expert, but like you said, i think its the heated metal cooling off.
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Old 02-25-2010, 04:19 PM   #3 (permalink)
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does the same thing on mine.

i am no expert, but like you said, i think its the heated metal cooling off.
I've just never heard an exhaust make such a loud thud from cooling, usually you hear little metallic "tink" sounds, glad im not the only one thats hearing it though!
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Old 02-25-2010, 06:14 PM   #4 (permalink)
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In the summer time, it's very noticeable. No worries.
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Old 02-25-2010, 06:57 PM   #5 (permalink)
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ahh, comfort, I <3 you guys.
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Old 02-25-2010, 06:59 PM   #6 (permalink)
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i'm curious if any of the other systems have this same problem
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Old 02-25-2010, 07:26 PM   #7 (permalink)
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any metal exhaust will make this pinging sound on cool down
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Old 02-25-2010, 07:30 PM   #8 (permalink)
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I never had that with the magnaflow I had on my G, or the Injen I had on my GSX, which is why it seemed new to me. I know exhausts will make a pinging sound when they cool, but this one thuds more than pings ya know?
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Old 02-25-2010, 09:54 PM   #9 (permalink)
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Haven't really noticed any thuds. Video?
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Old 02-25-2010, 09:57 PM   #10 (permalink)
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Haven't really noticed any thuds. Video?
i'll record it tomorrow, happens every time I drive and park it, shouldnt be too hard to get.
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Old 02-25-2010, 10:55 PM   #11 (permalink)
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red till have you know that ridiculous picture you have distracts me haha
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Old 02-25-2010, 11:11 PM   #12 (permalink)
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red till have you know that ridiculous picture you have distracts me haha
what is it with you people making fun of me! I'm working on having my teeth fixed, geez!
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