09-24-2024, 06:43 PM | #67 | |
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MASHCT1215.50 |
09-29-2024, 10:10 AM | #68 |
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So here is a shot of my bud's stock exhaust outside. The set up I have is 13db louder. This was his loudest of all his revs. Same app used for both level tests.
mike@x-ph.com Info@mad-us.com
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2024 M2 | BSM | 6SPD | Port-Installed M Perf HAS | MAD Axle-back Exhaust | MAD CAI with blue filters | Dinan Midpipe | Richland Forged RF-GT3R Wheels Brushed Competition Gold & machined face | AudioControl D-6.1200 Amp & DSP | CDT Audio ES Gold Fronts & Rear | Morel BMW-Specific Subwoofers | Lots of neat interior upgrades!
Last edited by MASHCT; 09-29-2024 at 10:17 AM.. |
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09-29-2024, 09:29 PM | #69 |
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Drives: '23 M2 & '22 X3 M Competition
Join Date: Jun 2022
Location: Prosper, TX/Austin, TX
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Using the Decibel X app, in the cabin with everything set to sport & the flaps open to the oem limit, ACC at 85 mph on the interstate the app was showing between 70-72 decibels.
Compared to the same settings, same speed, same interstate on Thurs with the flaps closed it was showing 75-80 decibels. This was before I moved the heat shield that appeared too close to the driver's side pipe. For comparison my supercharged Z06 with Corsa Xtreme exhaust & 80 mil sound deadening material in the entire cabin, shows 85-90 decibels under the same speed/road conditions. |
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MASHCT1215.50 |
09-30-2024, 11:58 AM | #71 | |
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Open valves on the highway gave a less drony sound vs the open and it was the complete opposite around town. In some instances open is better when cruising at highway speeds.
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