11-29-2021, 10:52 AM | #1 |
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Anyone on here with an DCT TRANSMISSION and ZERO CATs downpipe/exhaust able to give their remarks or video footage regarding the 1-2k rpm rattle drone rasp issue?
I've tried: - Catless dp + AA EL res & non-res midpipe (small and large res tried both) has a disgusting rasp scream @ 1-3k rpm (10/10 loud rasp) - Catless dp + secondary cat delete sounds kinda rasp @ 1-2k rpm (4/10 loud rasp) - Catless dp + stock exhaust sounds great but a bit quiet. (0/10 loud rasp) Anyone with an aftermarket exhaust or custom resonator setup that was able to take this out while get the the added power? UPDATE: PLEASE only comment if you have a full catless setup and have tested the 1-2.5k rpm range. Catted exhaust comments should not be made here. |
11-29-2021, 12:10 PM | #3 |
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11-29-2021, 12:39 PM | #4 |
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11-29-2021, 03:10 PM | #5 | |
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I wonder if ANYONE has made a custom resonator setup or solved this. |
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11-30-2021, 08:54 PM | #7 |
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11-30-2021, 09:22 PM | #8 |
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read my post, I was having a similiar issue. I even came to the point either fit single turbo or sell the car.
4 resonators made it so damn good especially in row rpms. even at cold start, valves fully open car does not sound obnoxious. Suprisingly car now sounds the best especially in lower rpm range lol https://f80.bimmerpost.com/forums/sh...2&postcount=15 |
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methkingM2C87.50 |
11-30-2021, 09:32 PM | #9 | |
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I'm gonna slap the resonators where the secondary cats were. And I'll leave the oem resonator box. I do wanna change the muffler but later. |
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11-30-2021, 10:54 PM | #10 |
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methkingM2C
AeroTurbine TR252 Resonators fit them right before diff or sides of the diff. edit: they also helped smell, I would say around 30% https://aeroexhaust.com/i-30497639-a...ter-necks.html sound clip https://vocaroo.com/1sjlZ0RE0W8E Last edited by deli333; 11-30-2021 at 11:04 PM.. |
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methkingM2C87.50 |
12-01-2021, 08:59 AM | #11 | |
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Will update on effects for catless dp, secondary cats replaced with above resonator, oem resonator untouched, stock muffler. |
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deli333145.00 |
12-02-2021, 08:56 AM | #12 |
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I have a DCT and full catless setup using Akra DP back as well. Driving normal and even idling it sounds great. I will admit that it is utterly obnoxious with load and WOT tho. Ive grown to like the sound but have also considered adding some additional resonators somewhere as well or even swapping my VRSF DP's to the resonated ones.
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