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09-26-2020, 10:40 PM | #23 | |
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Noise - There is no additional noise during driving. However, there is an intermittent faint split second (maybe 0.5s?) buzz when the engine is transitioning from very low rpms to idle. It seems to be random and I can't replicate it, but it was not there before this mod. Vibration - There is definitely more vibration from the exhaust, felt thru the seats. Its not very bad, I liken it to putting your finger on your wrist to feel for your pulse. It's faint but it's definitely there. I will probably get used to it cos I do enjoy a more feelsome car, but if you want ultimate comfort then this may not be for you. Do note that I have zero cats or resonators, so you may notice less vibrations with a stock exhaust. Harshness - No harshness to speak of. |
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01-06-2021, 10:04 AM | #24 |
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Having used these Powerflex exhaust hangers for a couple months now, I definitely do feel more vibration thru the whole car at idle. Don't think I will recommend this for a street car.
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01-06-2021, 02:04 PM | #25 |
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Thanks for the update. Sticking with OEM equivalent.
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01-06-2021, 05:56 PM | #26 |
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01-06-2021, 09:30 PM | #27 |
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I went with the HJS hangers for $15 x 2 that weigh just over 10.3 ounces. With the weight the akrapovic exhaust, I could probably get away with a shoelace. Here are a few pics and the part number.
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Last edited by Bubbles; 01-06-2021 at 09:35 PM.. |
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07-07-2021, 01:40 AM | #28 |
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Update to the update. The vibrations turned out to be a dead VT engine mount. Got that replaced with Powerflex engine mounts and all good now. No noticeable vibration or buzzing from the car, be it exhaust or engine mounts. I can definitely recommend the Powerflex exhaust mounts.
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07-07-2021, 05:37 AM | #29 |
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the exhaust still moves at wot, it really just limits the up and down movement of the exhaust.
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2011 Frozen Black/Fox Red E90 M3 650+WHP
G-Power Supercharged First DCT to Manual Conversion Worldwide KW CS, BBS RI-A, BW Headers, Snow 2.5 |
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