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AA Gen 2 Exhaust drone?
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07-19-2020, 12:08 PM | #1 |
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AA Gen 2 Exhaust drone?
I just installed AA Gen 2 exhaust (muffler). I am having lots of drone in the cabin from 1200 to 2500 rpm.
My exhaust setup is: Stock cats (headers), AFE race pipes (replacing secondaries), stock resonator, AA gen 2 muffler. Is this normal? Edit: Drone was caused by exhaust leak on one of the clamps. Last edited by W37V; 11-09-2020 at 09:13 AM.. |
07-19-2020, 02:02 PM | #3 |
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I can see why. The frequency is causing some interior rattles which were not there before. Music and AC noise reduced the drone, but it’s still a bit too much.
On the separate note, there is definitely few hp freed up with this exhaust. |
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07-19-2020, 02:12 PM | #4 |
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This is surprising to me. I have a similar set up (almost identical except I have AA catless headers) and don’t notice any annoying drone. I really don’t spend time in that rpm range though I’m usually around 2500-3000 rpms when I’m cruising maybe that’s why. I find that muffler very quiet cruising in the 3k to 4K range btw. (That’s my highway rpms range.)
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07-19-2020, 03:20 PM | #6 | |
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07-19-2020, 03:38 PM | #7 | ||
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I will jack up the car to see if any of my clamps are loose or if there is anything touching. I do have my tips outside of bumper, but maybe they are too far out. |
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07-19-2020, 03:39 PM | #8 |
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07-29-2020, 01:34 PM | #9 |
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So after few hundred miles, it seems like the exhaust is quitting down. I did not see any leaks or anything touching.
Since I have AFE race pipes, which do not use transmission support, I might switch to supersprint race pipes for just in case. |
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07-29-2020, 05:49 PM | #11 |
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I don’t think it’s quieter it just doesn’t drone around 3k rpms. It’s basically a straight through with a resonance chamber to quiet the sound down at a certain frequency which for me seems to be in the ~3k rpms range
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07-29-2020, 05:59 PM | #12 | |
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Would love to see how my Magnaflow compares to the AA R2 or BMW Performance. |
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11-09-2020, 11:29 AM | #14 |
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11-09-2020, 05:18 PM | #15 | |
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Also, since my exhaust is made of pieces and is missing transmission brackets (I have afe pipes), I wouldn’t be surprised is what is contributing to drone. I’m tempted to get supersprint pipes as they retain use of the transmission brackets so I can test my theory. |
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11-10-2020, 07:22 AM | #16 |
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11-10-2020, 08:02 AM | #17 |
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